Ch3ch2cl Intermolecular Forces

Chloroethane | CH3CH2Cl or C2H5Cl | CID 6337 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities. The p-isomer being more symmetrical fits closely in the crystal lattice and thus has stronger intermolecular forces of attraction than those of o- and m- isomers. Explain your reasoning for ordering them. Hydrogen bonding The hydrogen bond is the strongest intermolecular force, typically about 1/10th the strength of a covalent bond. Which of the following can be remelted time and again without producing any change? 1) Thermosetting polymers 2) Thermoplastic polymers 3) Bakelite 4) Melamine-formaldehyde polymer 38. intermolecular force. A) F 2 < NH 2 CH 3 < CO 2. CH3CH2CH2CH2CH2CH3 II. • Melting points of the hydrogen halides increase in the order HCl < HBr < HF < HI. Crystallization is a separation process which separates a solid from the solution where it is dissolved. 6 Both ethanoic acid and propylamine can form intermolecular hydrogen bonds. 1 Ethyl alcohol CH3CH2OH -115 78. So we want to go from the lowest boiling point to the highest boiling point and that is going to be based on the types of inter molecular forces and the strength of inter molecular forces. Ethanol and formic acid exist in equilibrium with ethyl formate. There are three intermolecular forces of ethanol. Using principles of chemical bonding and/or intermolecular forces, explain each of the following. · Question 13 Place The Following Compounds In Order Of Increasing Strength Of Intermolecular Forces. txt) or read online for free. Chemistry Minimum Package for Slow Learners Group IV (1) - Free download as Word Doc (. (ii) What can be inferred about the relative strengths of the intermolecular forces in CCl 4 (l) and HCl( ? l) Justify your answer in terms of the information above. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. It can be a hydrogen bond acceptor. H2, then N2, then O2, then CO2. Answer to: For the gas-phase decomposition of chloroethane, CH3CH2Cl arrow C2H4 + HCl, the rate constant at 723 K is 1. Hydrogen bonding The hydrogen bond is the strongest intermolecular force, typically about 1/10th the strength of a covalent bond. The physical properties, especially the melting and boiling point of a compound, depend on the intermolecular forces present. As part 4 of the most important reactions you learn in org 1, (acid-base, substitution, and addition) here’s an introduction to the elimination reaction. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. The melting point of a substance increases as the strength of its intermolecular increases. Answer all questions. ) One point is earned for a correct answer. Question: EX1 · Question 10 What Is The Strongest Type Of Intermolecular Force Present In CH3CH2CH3? · Question 11 Identify The Type Of Solid For AgCl. Intermolecular forces of attraction in liquid chloroethane are larger due to dipole-dipole attraction; thus a higher boiling point for chloroethane. CH 3 CH 2 Cl → contains C-H and C-Cl bonds. Allow abbreviated formulas C2H3Cl, C2H5Cl, C2H5OH. Faktor-Faktor Yang Mempengaruhi Pergeseran Kimia Dan Tetapan Penggabungan 1. The bond dissociation energy for F3Si-F is 166 kcal/mol, while the bond dissociation energy for H 3 Si-F is 152 kcal/mol. direct dynamics studies on the reaction of H atom with CH3CH2Cl. All the hydrogens in dimethyl ether (CH3OCH3) are bonded to carbon; therefore, intermolecular hydrogen bonding between dimethyl ether molecules does not take place, and its boiling point is lower than that of ethanol (CH3CH2OH), where hydrogen bonding involving the @OH group is important. 第一章 有机化学绪论_高等教育_教育专区 611人阅读|36次下载. Arrange the compounds in order of increasing boiling point. 7 - Polar Therefore, unequal sharing results in either a hydrogen or dipole bond. This chemistry video tutorial focuses on intermolecular forces such hydrogen bonding, ion-ion interactions, dipole dipole, ion dipole, london dispersion forces and van deer waal forces. Kinetic energy of the molecules equals the strength of the intermolecular forces. (a) At the temperature and pressure at point 4. Like Aryabhata before him, he declared that the earth was spherical. Note that here, the term "Intermolecular Force" is a misnomer , even though it is commonly used, as these are the forces between ions with molecules possessing a. Using principles of chemical bonding and/or intermolecular forces, explain each of the following. attractive forces that must be overcome are hydrogen bonding and dispersion forces. Algebra 2 Introduction, Basic Review, Factoring, Slope, Absolute Value. Full file at https://fratstock. CH3CH2CH2OH is a polar molecular compound. The intermolecular forces present in HSCH 2 CH 2 SH include which of the following? I. dipole-dipole II. Answer: CH3CH2CH2CH2CH3 has the higher boiling point. Which has the smallest dipole-dipole forces? a) Cl2 b) CH3CH2Cl c) H2Se d) PH3. 2 mol/L NaCl will have a higher increase in boiling temperature than glucose. The molecules of 2-iodo-2-methylpropane are more polar and have stronger IMF than the molecules of 2-methylpropane. 2 Interactions between Ions and Molecules with a Permanent Dipole; 12. Place in order of DEC strength of intermolecular forces I. How much energy is required to heat 87. CH3CH2CH3 < CH3CH2OCH3 < CH3CH2CH2NH2 < CH3CH2COOH c. among constitutional isomers, branched isomers have a more compact shape, decreased area of contact, decreased van der Waals attractive forces between neighbors, and lower boiling points 1-bromobutane (n-butyl bromide) bp = 100° 2-bromo-2-methylpropane (t-butyl bromide) bp = 72°. 5 points 47. a substance, in the gaseous state. When determining relative acidity, it is often useful to look at the relative basicity of the conjugate bases. The name "Ion dipole forces" describes what they are, which simply speaking, are the result of the Coulombic electrostatic interactions between an ion and the charged ends of a dipole. Making statements based on opinion; back them up with references or personal experience. The low boiling points and melting points of the smaller molecules are due to the fact that small molecules have fewer electrons and weaker van der Waals forces, compared with large molecules (Table 3). In your answers, use appropriate principles of chemical bonding and/or intermolecular forces. CH3CH2CH2OH falls into this category. The intoxicating effects of ethanol consumption have been known since ancient times. At low temperature London dispersion forces become stronger in them and solidify the gaseous Krypton. 08 g mol-1) from a solid at -154. Now let's see the d. C2h5cl shape. 6 Both ethanoic acid and propylamine can form intermolecular hydrogen bonds. hs kontakt: vroni. A cubic solid is made of two elements. (f) Identify the strongest type of intermolecular force present in each of the compounds propan-1-ol, propanal and propanoic acid. dipole forces: O C O: Topic: Intermolecular Forces 86 Briefly explain why No hydrogen bonding is possible between molecules of propane, resulting in a lower boiling point compared with ethanol Ethanol, C2H5OH, and dimethyl ether, CH3OCH3, have the same molar mass, yet, ethanol has a much higher boiling point. an increase in the intermolecular forces in the liquid 3. txt) or read online for free. YouTube Answer of 2nd question : As 4 Cl molecule is distributed around they cancel each other's dipole moment and became apolar. CH3CH2Cl, F2, NH2CH3 A) NH2CH3 PLEASE CHECK!!. Since Br is better leaving group. · Question 13 Place The Following Compounds In Order Of Increasing Strength Of Intermolecular Forces. Hence the intermolecular forces are very high and molecules are highly associated. Explanation: H2O and CH3OH both are having dipoles so interactions are dipole-dipole interactions. Ion-dipole forces, therefore, are the electrostatic interactions between the fixed dipole in one molecule and an ion. 1 States of Matter and Intermolecular Forces; 12. Hydrogen bonding is a type of intermolecular force that gets formed when a compound has hydrogen atom directly attached to highly electro-negative N, F or O atom. on the nature of the forces. a substance, in the gaseous state. 4 Intermolecular Forces Involving Nonpolar Molecules; 12. There are three intermolecular forces of ethanol. and the enthalpy of vaporization of CS2(l) to be 28 kJ/mol. Algebra 2 Introduction, Basic Review, Factoring, Slope, Absolute Value. Section: 2. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. Radar scattering properties of pancakelike domes on Venus. Chemistry Minimum Package for Slow Learners Group IV (1) - Free download as Word Doc (. Please Help: List the following set of compounds in order of increasing boiling point. You are able to read the periodic table and determine the average atomic mass for an element like carbon. Determine the kinds of intermolecular forces that are present in each element or compound. These forces are weaker bonds than Hydrogen bonds but stronger than London Dispersion forces. 10 mol dm-3 KOH(aq) to form 2-methylpropan-2-ol is an example of nucleophilic substitution. 0 g / mol, C 6 H 6 = 78. (ii) Explain, in terms of the properties of and intermolecular forces in CH3CH2OH and Y, why the chosen conditions for the reaction ensure that Y is the product. Li+ and ClO2- both are ions so interactions are ion-ion interactions. (sometimes called the London dispersion force , after the physicist Fritz London, who first described this force in the early 1900s). dispersion IV. isopropyl alcohol c. I think they do contain intermolecular forces but i'm not sure, and if they do, i'm not sure how to explain it. 5 A Summary of van der Waals Intermolecular Forces. Arrange the compounds in order of increasing boiling point. (K) He 2 4. In chemisorption a single. The first organic chemical to be synthesized in a lab from inorganic chemicals was. CH2CH3 + HCI. The hydrolysis of 2-iodo-2-methylpropane by 0. Thio organized these in order of increasing boiling point. forces than CH 3OH, so it has the highest boiling point. A cubic solid is made of two elements. with the aid of distruption of intermolecular forces that exist in water upon freezing. They are the average value of the bond enthalpy for the same bond in different molecules. F2 or HCl I. · Question 13 Place The Following Compounds In Order Of Increasing Strength Of Intermolecular Forces. The purpose of this review is to encompass solvent effects on the NMR spectra of various nuclei, to present the. CH3COF is polar, exhibits Keesom forces (dipole-dipole attraction), but not hydrogen bonding. The remaining compounds are polar, but Ch3CH2CH2OH shows greater solubility in water owing to presence of hydrogen bonding. if you have a liquid containing all of these substances and are distilling it, the lowest bp substances distill first. docx), PDF File (. SOLID STATE. The physical properties, especially the melting and boiling point of a compound, depend on the intermolecular forces present. The distance between molecules in a crystal lattice is small and regular, with intermolecular forces serving to constrain the motion of the molecules more severely than in the liquid state. qrk is worth reading. Les hydrocarbures 2. A clear conclusion to be drawn from this fact is that intermolecular attractive forces vary considerably, and that the boiling point of a compound is a measure of the strength of these forces. are stronger intermolecular forces than Dispersion forces occur between molecules that have permanent net dipoles (polar molecules), for example, dipole-dipole interactions occur between SCl 2 molecules, PCl 3 molecules and CH 3 Cl molecules. Login to reply the. Ib Diploma Chemistry Hl Textbook. Explain, in complete sentences, how you determined the order for each set. CH3CH2CH2OH falls into this category. compounds with more H-bonds (can only be Hydrogen bonded with either Flourine, Oxygen, and Nitrogen) Those have stronger intermolecular forces. Liquids, Solids, and Intermolecular Forces; Chemistry Structure and Properties Nivaldo Tro. For many real gases this approximation holds good at low pressures and high temperatures, but it tends to break down at low temperatures and high pressures (when the separation of molecules is reduced), especially for molecules with strong intermolecular forces, such as hydrogen bonding (e. Section: 2. Thirty six asked us to determine the kind of in a molecular forces that are present in each element or compound. Here HOCH2CH2OH>CH3CH2OH>CH3CH2Cl [order of intermolecular forces]Due to two hydroxyl groups there is strong hydrogen bonding compared to one hydroxyl group and one chloride group. Crystallization is a separation process which separates a solid from the solution where it is dissolved. CH3Br What forces are present? CH3CH2CH2OH. The intoxicating effects of ethanol consumption have been known since ancient times. Hydrogen bonding is found in situations represented by D-H---A where both the donor atom, D, and the acceptor atom, A, are one of the highly electronegative elements O, N, or F. A dipole-dipole interaction is an attraction or repulsion between polar molecules. (b) Both chloroethane and acetone are polar. ) but only with acid. compounds with more H-bonds (can only be Hydrogen bonded with either Flourine, Oxygen, and Nitrogen) Those have stronger intermolecular forces. this question asked for us. C2h5cl shape. Molecular Weight 74. All liquids have some vapor pressure. Final answer: CH3COF. 第一章 有机化学绪论_高等教育_教育专区 611人阅读|36次下载. • Because a π bond is electron rich and much weaker than a σ bond, alkenes undergo addition reactions with electrophiles (10. 95 New Way Chemistry for Hong Kong A-Level 3A 95 New Way Chemistry for Hong Kong A-Level Book 3A. Explain this statement using phenylazobenzene as the example. Each station not only offers a unique opportunity to test your students knowledge (offer an opinion, answer questions based on a video or reading,. Download books for free. hydrogen bonding C. You could alternatively also draw the structure by including two dots for every bond. CH3OH, CH3SH. A force present in all substances with electrons is the dispersion force An intermolecular force caused by the instantaneous position of an electron in a molecule. ion-dipole III. dipole forces: O C O: Topic: Intermolecular Forces 86 Briefly explain why No hydrogen bonding is possible between molecules of propane, resulting in a lower boiling point compared with ethanol Ethanol, C2H5OH, and dimethyl ether, CH3OCH3, have the same molar mass, yet, ethanol has a much higher boiling point. Rank the SN2 reaction rate of the following species, from fastest to slowest. CHEM -> PLEASE CHECK!!. Solvent effects are defined in a very general way as consequences of intermolecular forces, and their relevance to NMR arises from the relatively high concentrations necessary, compared with other spectroscopic methods. Router Screenshots for the Sagemcom Fast 5260 - Charter. txt) or view presentation slides online. CH3Cl -97 -23. (b) Dimethyl ether’s boiling point is –23 C. hydrogen bonding A) I, II, III, and IV B) I and III C) I, III, and IV D) I and II E) II and IV 7. 1 g acetone (molar mass = 58. Subjects Covered: Intermolecular forces including: hydrogen bonding, dipole-dipole, and London (dispersion) forces, intramolecualr forces including: ionic, covalent, and metallic. CH3CH2OH + HBr --> CH3CH2Br + H2O. pentanoic acid d. Identify the type(s) of intermolecular attractive forces in (i) pure glucose Hydrogen bonding OR dipole-dipole interactions OR van der Waals interactions (London dispersion forces may also be mentioned. (b) Both chloroethane and acetone are polar. Solomons Organic Chemistry. CH3OH, CH3SH. butylphenyl ether, Name the compound CH3CH2OCH2CH2CH3. 4) All are correct. (b) For any pairs of substances that have the same kind(s) of attractive forces and/or bonds, discuss the factors that cause variations in the strengths of the forces and/or bonds. Determine the kinds of intermolecular forces that are present in Explain your reasoning. Consider the following compounds: (4) CH3CH2NH2 CH3CH2OH CH3CH2CH3 CH3COOH a. A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH I know High Intermolecular force = High boiling point! My question is if A, B & C are dipole-dipole, and D is hydrogen bonding. NH3 or PH3 I chose: NH3 D. Problem Details. Sodium Amide (Sodamide, NaNH 2), A Strong Base For The Deprotonation Of Terminal Alkynes (Among Other Uses). 27 Carbohydrate Research, 218 (1991) 27—54 Elsevier Science Publishers B. That is, strong intermolecular forces result in low vapor pressure and weak intermolecular forces result in high vapor pressure. Answer: The answer is: CH₄ < CH₃OH < CH₃CH₂OH < HOCH₂CH₂OH. Please Help: List the following set of compounds in order of increasing boiling point. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. The patterns in boiling point reflect the patterns in intermolecular attractions. 2-methylpropane. (b) Both chloroethane and acetone are polar. The values published in tables are usually average bond enthalpies. CH3CH2CH2OH is a polar molecular compound. Answer: CH3CH2CH2CH2CH3 has the higher boiling point. Chemistry Hydrocarbons (Zambak) Ayhan NAZLI , Murat DURKAYA , Yener EKŞİ , Nuh ÖZDİN , Muhammet AYDIN , Davut PİRAZ , Necdet ÇELİK , Uğur Hulusi PATLI , Varol GÜRLER Categories: Chemistry. It is soluble in water. is the most polar, allowing for high intermolecular force levels. London Dispersion forces D. So Cl2 would have the weakest force, then Br2, then I2. Intermolecular forces of attraction in liquid chloroethane are larger due to dipole-dipole attraction; thus a higher boiling point for chloroethane. NASA Astrophysics Data System (ADS) Vogiatzis, Konstantinos D. In physisorption adsorbed. NW + 1 more educators. The three-dimensional structure of an organic molecule and the functional groups it contains determine its biological function. D) F 2 < CO 2 < NH 2 CH 3. Convert documents to beautiful publications and share them worldwide. Explain your reasoning for ordering them. Magellan radar images have disclosed the presence of a large number of almost perfectly circular domes, presumably of volcanic origin, in many regions of Venus several with diameters of 30 km or more. The remaining compounds are polar, but Ch3CH2CH2OH shows greater solubility in water owing to presence of hydrogen bonding. Sodium Amide (Sodamide, NaNH 2), A Strong Base For The Deprotonation Of Terminal Alkynes (Among Other Uses). Chloroethane, commonly known by its old name ethyl chloride, is a chemical compound with chemical formula CH3CH2Cl, once widely used in producing tetraethyllead, a gasoline additive. (CH3)3CCH2CH3 CH3CH2OH CH2Br2 CH3CH2CH3 CH3CH2Cl HOCH2CH2OH. AS Chemistry Unit 2 Notes Shapes of molecules and Ions Pairs of electrons will repel each other as far as possible (due to electrostatic repulsion) Finding the shape: 1. how can i determine. The hydrolysis of 2-iodo-2-methylpropane by 0. • Organic compounds are generally held together by weak intermolecular forces(Van Der Waals forces) 5. 2 Covalent bonding 4. 5 points 47. Haloalkane or alkyl halides are the compounds which have the general formula "RX" where R is an alkyl or substituted alkyl group and X is a halogen (F, Cl, Br, I). get a idea. CH3NH2 Which has dipole-dipole as strongest forces? CBr4 CH3Br Br2 BrCH2CH2OH. Which has the strongest intermolecular forces of attraction? 1. dienstag, 29. CH3CCl3, CH3CH2Cl, NaCl, CCl3CH2OH. Handbook of Inorganic Chemicals Pradyot Patnaik, Ph. Use MathJax to format equations. Determine the kinds of intermolecular forces that are present in Explain your reasoning. Likewise, Cl^(-) ions will have a ion-dipole interaction to the positive dipole of H of water molecules. CH3CH2CH2OH falls into this category. Intermolecular Forces. The low boiling points and melting points of the smaller molecules are due to the fact that small molecules have fewer electrons and weaker van der Waals forces, compared with large molecules (Table 3). A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH I know High Intermolecular force = High boiling point! My question is if A, B & C are dipole-dipole, and D is hydrogen bonding. Problem 40. cyclohexylbutyl ether b. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. Schaum's Outline of Theory and Problems of Organic Chemistry George Hademenos The new edition of this study guide makes learning organic chemistry much easier than with the usual textbook, and it shows how organic chemistry is applied today in biological chemistry, medicine and industry. (i) Identify all types of intermolecular forces present in HCl(l). Discrete molecules retain molecular identity, and such molecules would act like distinct units of matter. University. Molecular Weight 74. They occur when the slightly positive end of one polar molecule is attracted to the slightly negative end of another polar molecule. It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH I know High Intermolecular force = High boiling point! My question is if A, B & C are dipole-dipole, and D is hydrogen bonding. 0 °C to a liquid at -42. Answer to: For the gas-phase decomposition of chloroethane, CH3CH2Cl arrow C2H4 + HCl, the rate constant at 723 K is 1. (f) As an antifreeze in automobile radiators. The reason is that Vander waal’s or intermolecular forces which are involved in adsorption are more predominant in the former than in the latter. The distance between molecules in a crystal lattice is small and regular, with intermolecular forces serving to constrain the motion of the molecules more severely than in the liquid state. The only intermolecular force that acts upon Diethyl Ether is Dispersion. For which substances are the dipole dipole attractive forces greatest? Propane, dimethyl ether, are non-polar molecules that would be held together by the London forces, rather than dipole-dipole interactions. However, acetone forms hydrogen bonds to water much more effectively than chloroethane does, resulting in greater solubility of acetone in water. When we dissolve NaCl, the Na^(+) ions will have a ion-dipole attraction to the negative dipole of O^ atom of water molecules. NASA Astrophysics Data System (ADS) Vogiatzis, Konstantinos D. On the Interaction between Carbon Dioxide and Nanomaterials with High Accuracy ab initio and DFT Calculations. 2) These possess weak intermolecular forces of attraction between polymer chains. Faktor-Faktor Yang Mempengaruhi Pergeseran Kimia Dan Tetapan Penggabungan 1. Intermolecular forces - van der Waals forces RMM of CH4 is 16, that for N2 is 28. Grades Appropriate: 10-12. 0 g / mol, CH 4 = 16. CH3CH2Cl ( Chloroethane ) Polar: CH3CH2NH2: Polar: CH3CH2OH ( Ethanol ) Polar: ch3cho: Polar: ch3chohch3 ( isopropanol ) Polar: CH3CL or H3CCl (Chloromethane) Polar: CH3CN ( ACETONITRILE ) Polar: CH3COH: Polar: CH3COOH (acetic acid) Polar: CH3F (Fluoromethane) Polar: CH3NH2 (Methylamine) Polar: CH3OCH3 (Dimethyl ether) Polar: CH3OH ( Methanol. AS Chemistry Unit 2 Notes Shapes of molecules and Ions Pairs of electrons will repel each other as far as possible (due to electrostatic repulsion) Finding the shape: 1. What intermolecular force does CH3CH2Cl have? We need you to answer this question! If you know the answer to this question, please register to join our limited beta program and start the. (b) Dimethyl ether’s boiling point is –23 C. Question = Is CH3OCH3 polar or nonpolar? Answer = CH3OCH3 (Dimethyl ether) is Polar What is polar and non-polar? Polar "In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment. Allow abbreviated formulas C2H3Cl, C2H5Cl, C2H5OH. The substances are arranged in order of increasing molar mass: H 2 = 2. 77) What is polarizability and how is it related to the size of an atom? Answer: Polarizability indicates the ease with which an electron cloud can be distorted. The water molecules are thus attracted strongly to one another and exhibit a relatively large surface tension, forming a type of "skin" at its surface. Publishing platform for digital magazines, interactive publications and online catalogs. 2013 (800-930), kl. Radar scattering properties of pancakelike domes on Venus. if you are sure that you know the right answer lemme know:] I appreciate it!. Source(s): chemistry course. Hydrogen bonding: The H of C4H10 is attracted to the O of H2O. Hydrogen bonding is a type of intermolecular force that gets formed when a compound has hydrogen atom directly attached to highly electro-negative N, F or O atom. The systematic synthesis of such compounds developed in the 19th century in. Lizabeth T. Use MathJax to format equations. CH3CH2Cl or CH3CH2OH I chose: CH3CH2Cl 2. Li+ and ClO2- both are ions so interactions are ion-ion interactions. Which substance would be able to form hydrogen bonds to water but would not have any hydrogen bonding between their own molecules? ethanol c. Find the mass (in g)of KMnO4 in the above solution. The compound with the greatest overall intermolecular forces will have the lowest vapor pressure. (c) At the pressure and temperature of point 1. Problem Details. Cs+ and CH3CH2Cl. The stronger the intermolecular forces in a substance (A) the higher the boiling point. Pentelute, Brad L; Mandal, Kalyaneswar; Gates, Zachary P; Sawaya, Michael R;. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Molecular Weight 74. A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH **I know High Intermolecular force = High boiling point!** My question is if A, B & C are dipole-dipole, and D is hydrogen. They are the average value of the bond enthalpy for the same bond in different molecules. Robinson Louisiana State University Baton Rouge, Louisiana, U. (CH3)3CCH3 III. In modern times, ethanol intended for industrial use is also produced from by-products of petroleum refining. A) Three or more atoms in the molecule B) Presence of one or more polar bonds C) A non-linear structure D) Presence of oxygen or fluorine E) Absence of a carbon-carbon double. Boiling Points of Methane, Ethane, Propane Larger molecule = stronger dispersion forces = molecules are more attracted to each other = tougher to separate = higher boiling point. 05 M oxalic acid solution. 6 Both ethanoic acid and propylamine can form intermolecular hydrogen bonds. Since these intermolecular forces are weak, the molecules are readily separated. It has London dispersion forces and dipole-dipole forces. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. However, acetone forms hydrogen bonds to water much more effectively than chloroethane does, resulting in greater solubility of acetone in water. The low boiling points and melting points of the smaller molecules are due to the fact that small molecules have fewer electrons and weaker van der Waals forces, compared with large molecules (Table 3). The intermolecular forces present in HSCH 2 CH 2 SH include which of the following? I. Like any other hydrocarbons, alkenes burn in air or oxygen, but these reactions are unimportant. 0 g / mol, CH 4 = 16. Recentdevelopmentsin microwavespectroscopyandthe related theory2'-10 have providedpowerfulnewtools for the studyof this phenomenon. Cl A) Topic: Molecular geometry, polarity and Intermolecular forces 20. Amoroso for New San Miguel Corp. First, it is an ion or charged molecule that interacts exclusively through neutral polar dipoles (Fig. They are the average value of the bond enthalpy for the same bond in different molecules. H3C C CH3 CH3 ~ 19 ~ OH OH CH3CH2CH2CH2 CH3CHCH2 CH3 CH3CH2CH CH3 OH OH tert-Butyl alcohol Butyl alcohol Isobutyl alcohol sec-Butyl alcohol (mp 25 °C) (mp \u201390 °C) (mp \u2013108 °C) (mp \u2013114 °C) 2. Revision Functional Groups and Organic Chemistry ICS Madrid. Algebra 2 Introduction, Basic Review, Factoring, Slope, Absolute Value. They are the average value of the bond enthalpy for the same bond in different molecules. Cresol are less acidic than phenol. : (1) CH3CH2Cl and CH3CH2Br (2) CH3CHCH2 and CH3CH2CH3 (3) CH3CHO and CH3COCH3 (4) CH3CH2OH and CH3OCH3 (4) CH3CH2OH and CH3OCH3 b/c both have the same molecular formula-- 2 carbon atoms, 6 hydrogen atoms, 1 oxygen atom-- and each compound have different functions. (4) (Total 20 marks) 55. An ion-dipole force is a type of intermolecular force in which forces of attraction or repulsion occur between neighboring ions, molecules or atoms. (b) Dimethyl ether's boiling point is -23 C. The intermolecular forces present in CH 3 NH 2 include which of the following? I. b) Stronger than London forces. Thus Krypton forms Atomic solids. if you have a liquid containing all of these substances and are distilling it, the lowest bp substances distill first. All Chemistry Practice Problems Intermolecular Forces and Physical Properties Practice Problems Q. ) Klaus Bock, Department of Chemistry, Carlsberg Laboratory, Va/by, DX 2500 (Denmark) and James C. Hydrogen bonding is found in situations represented by D-H---A where both the donor atom, D, and the acceptor atom, A, are one of the highly electronegative elements O, N, or F. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. 05 M oxalic acid solution. dipole-dipole forces B. Use MathJax to format equations. In physisorption adsorbed. Write Lewis structures consistent with this observation, and explain your answer. The p-isomer being more symmetrical fits closely in the crystal lattice and thus has stronger intermolecular forces of attraction than those of o- and m- isomers. PHYSICAL PROPERTIES CONT. However, acetone forms hydrogen bonds to water much more effectively than chloroethane does, resulting in greater solubility of acetone in water. the bigger and longer a molecule is, the more polarizable it is, and therefore the strongeeer the intermolecular forces are. each element or compound: a. (Hint: The oxygen atom in both structures satisfies the octet rule with two bonds and two lone pairs. methane sugar d. (b) Dimethyl ether’s boiling point is –23 C. Harris Quantitative Chemical Analysis 8th Edition | David Garcia - ID:5c37a45f18976. dipole-dipole forces B. But much more weakly than a bond. They are London dispersion, dipole-dipole and the hydrogen bond. It is too small to handle normally. It expands by. O2 is stronger more electronegativity (shorter bond=stronger Lattice energy). Name one solid in which both Frenkel and Schottky defects occur. Which of the following can be remelted time and again without producing any change? 1) Thermosetting polymers 2) Thermoplastic polymers 3) Bakelite 4) Melamine-formaldehyde polymer 38. Arrange the compounds in order of increasing boiling point. how can i determine. All three of these forces are different due to of the types of bonds they form and their various bond strengths. The file contains 75 page(s) and is free to view, download or print. The Organic Chemistry Tutor 644,501 views. eu 13 Copyright © 2011 Pearson Education, Inc. Ans- order of reactivity for SN2 mechaism is 1>2>3. instead of OH– and Cl–. When C4H10O (diethyl ether) interacts with H2O (water), there are three intermolecular forces: Dipole-dipole: The positive H of H2O is attracted to the negative O of C4H10O. Rank the following compounds in order of decreasing vapor pressure based on intermolecular forces: a) CH4 b) isopentane C5H12 (2-methyl butane) c) CH3CH2CH2CH2OH d) CH3CH2CH2CH2CH3 you can overlap the choices if they are of the same vapor pressure -if intermolecular force increases, vapor pressure increases -intermolecular forces such as london. The physical properties, especially the melting and boiling point of a compound, depend on the intermolecular forces present. Matriculation Chemistry ( Hydrocarbon ) part 2 alkane - Free download as Powerpoint Presentation (. Explain this statement using phenylazobenzene as the example. The intermolecular attractions are strong. 3 CH3CH2OH + PI3 --> 3CH3CH2I + H3PO3. Problem 39. how to prepare for minimum marks in chemistry. Their strength depends to a large measure on the number of electrons in a molecule. Intermolecular force in tin 100 mL of ‘x’ M KMnO4 solution is neutralised by 100 mL of 0. Chloroethane | CH3CH2Cl or C2H5Cl | CID 6337 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities. Sales Force Union. • In general, the longer the chain length , the bigger the molecular mass ,the higher the melting and boiling points(WHY?). Marked set by BGOOD. install custom powershell module, Mar 29, 2018 · PowerShell module to ingest data into the Log Analytics Ingestion API. A) F 2 < NH 2 CH 3 < CO 2. A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH I know High Intermolecular force = High boiling point! My question is if A, B & C are dipole-dipole, and D is hydrogen bonding. 8) Arrange the following polymers in the increasing order of their intermolecular forces: Polythene, Buna-S, and Nylon-66. (c) CBr4 boils at a higher temperature than CCl4 because it has stronger intermolecular forces (or van der Waal or dispersion). 3 Difficulty: Medium. Les cours de Paul Arnaud Exercices Licence EXERCICES RÉSOLUS DE CHIMIE PHYSIQUE 3e édition Revue par Françoise Rouquérol Gilberte Chambaud Roland Lissillour Avec la collaboration de Abdou Boucekkine Renaud Bouchet Florence Boulc’h Virginie Hornebecq EXERCICES RÉSOLUS DE CHIMIE PHYSIQUE EXERCICES RÉSOLUS DE CHIMIE PHYSIQUE Les cours de Paul Arnaud Revue par Françoise Rouquérol. They occur when the slightly positive end of one polar molecule is attracted to the slightly negative end of another polar molecule. There are only single bonds in methylpropane (c) Explain the difference in the boiling points of 2-methylpropane and 2-iodo-2-methylpropane in terms of both molecular polarity and intermolecular forces. Energy is released when new intermolecular forces are generated between the haloalkane molecules and water molecules. 14 - What are London dispersion forces, and how do they Ch. (b) For any pairs of substances that have the same kind(s) of attractive forces and/or bonds, discuss the factors that cause variations in the strengths of the forces and/or bonds. 5 intermolecular forces exist among the molecules. High boiling points occur when intermolecular forces are strong. This mass is a ridiculously tiny number of grams. The lowering of freezing point. Hydrocarbons. • Alkanes have covalent bonds within molecules and intermolecular van der waals forces • A branched chain alkane has a lower Mt than straight chain isomer as branched chain alkanes can’t pack as closely together and have smaller molecular surface areas so van der waals forces are reduced. Problem Details. When sugar dissolves, the intermolecular forces break and molecules (NOT elements) are free of each other. In each part, your answer must include references to both substances. Convert documents to beautiful publications and share them worldwide. Notes - Free download as Powerpoint Presentation (. Les hydrocarbures 2. London forces. Answer: The answer is: CH₄ < CH₃OH < CH₃CH₂OH < HOCH₂CH₂OH. 5 °C hexane C6H14 68 °C pentane C5H12 36 °C What. Cresol are less acidic than phenol. Glycerol is very viscous with extensive intermolecular hydrogen bonding. It targets a protein found on the surface of bacterial cell. 5 Acetaldehyde CH3CHO -121 20 Acetic acid CH3CO2H 16. isopropyl alcohol c. Electron configuration practice worksheet in the space below, write the unabbreviated electron configurations of the. Intermolecular forces - van der Waals forces RMM of CH4 is 16, that for N2 is 28. If P, V, M, T and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by RT P M PM (b) (c) (d) (a) PM. (4) (Total 20 marks) 55. 3 CH3CH2OH + PI3 --> 3CH3CH2I + H3PO3. how to prepare for minimum marks in chemistry. When sugar dissolves, the intermolecular forces break and molecules (NOT elements) are free of each other. This process involves heating up the solution until the…. CH3CH2OH + HBr --> CH3CH2Br + H2O. Bonding *Lewis Dot Structure: #valence electrons = group number *Atoms want to achieve a stable octet noble gas configuration. It targets a protein found on the surface of bacterial cell. ) but only with acid. Peace Lesson 1 10. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Attractive forces between molecules, or intermolecular forces, account for the melting point, boiling point, and water solubility or insolubility of organic molecules. so, all these molecules have the same size and weight so thats ruled out. how can i determine asked by Tc on July 2, 2011. Thus Krypton forms Atomic solids. CH3CH2CH2CH2CH2CH3 II. ion-dipole III. name number_____ 09-105 fall 2016 problem set (20 points) [lecture notes through due monday 10/31 in lecture recitation (circle below one ta and one time):. The neutralisation reaction is an excellent example of how salts are formed, as it involves the transferral of electrons between acids and bases to form a salt and water. The file contains 75 page(s) and is free to view, download or print. Which has the strongest intermolecular forces of attraction? 1. The remaining compounds are polar, but Ch3CH2CH2OH shows greater solubility in water owing to presence of hydrogen bonding. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. At low temperature London dispersion forces become stronger in them and solidify the gaseous Krypton. • Because a π bond is electron rich and much weaker than a σ bond, alkenes undergo addition reactions with electrophiles (10. It targets a protein found on the surface of bacterial cell. (b) Both chloroethane and acetone are polar. USE: Ethyl bromide is used to make other chemicals and as a solvent. How size of the intermolecular force affects energy needed The forces between bromine I Bra molecules are (than the forces between chlorine I C12 molecules leading to more energy needed to separate the molecules) (or converse) OR brom ne I Br2 has intermolecular forces (or converse) Initiation M2 First propagation Cl. 5 °C hexane C6H14 68 °C pentane C5H12 36 °C What. 2013 (800-930), kl. Explain this trend. In a blatant plug for the Reagent Guide, each Friday I profile a different reagent that is commonly encountered in Org 1/ Org 2. These forces are weaker bonds than Hydrogen bonds but stronger than London Dispersion forces. Constrained Dipole Oscillator Strength Distributions for CF4, CClF3, CCl2F2, CCl3F, CHF3, CH3F, CH3Cl, CH3Br, CH3I, C2F6, and CCl3CF3 Article in Zeitschrift für Physikalische Chemie 230(10. CH3CH2Cl d. CH3Cl -97 -23. This series requires that you understand how to read line diagrams (click for video introduction) as well as to understand what wedge-dash notation means (for showing molecules in 3D). Arrange the following in order of increasing boiling point: CH4, CH3CH3, CH3CH2Cl, CH3CH2OH. Thio organized these in order of increasing boiling point. A hydrogen bond is a weak directional bond formed between a δ+ hydrogen atom in one molecule and the lone pair of electrons on a highly electronegative atom in another molecule. List the following set of compounds in order of increasing boiling point. Name a liquefied metal which expands on solidification. Schaum's Outline of Theory and Problems of Organic Chemistry George Hademenos The new edition of this study guide makes learning organic chemistry much easier than with the usual textbook, and it shows how organic chemistry is applied today in biological chemistry, medicine and industry. Hydrogen bonding is a type of intermolecular force that gets formed when a compound has hydrogen atom directly attached to highly electro-negative N, F or O atom. Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D Topic: Intermolecular forces. Using principles of chemical bonding and/or intermolecular forces, explain each of the following. Question: EX1 · Question 10 What Is The Strongest Type Of Intermolecular Force Present In CH3CH2CH3? · Question 11 Identify The Type Of Solid For AgCl. NH3 or PH3 I chose: NH3 D. Answer all questions. CH3CH2Cl or CH3CH2OH I chose: CH3CH2Cl 2. A cis alkene is more polar than a trans alkene, giving it a slightly higher boiling point (10. CH3Br or CH3Cl I chose: CH3Cl 2. asked by Tc on July 2, 2011; O. 2009 DOI 10. Organic chemistry is a chemistry subdiscipline involving the scientific study of the structure, properties, and reactions of organic compounds and organic mate…. 49) Primary and secondary amines exhibit hydrogen bonding; tertiary amines do not. This can clearly be seen by looking at the noble gas elements, whose ability to condense to liquids and freeze to solids is entirely dependent on. hs kontakt: vroni. Boiling point of a compound increases with increases in intermolecular forces. Hence the order is (CH3)2CHCl< CH3CH2Cl < CH3Cl< CH3Br. The stronger the. 1 g acetone (molar mass = 58. 1 chloroéthane 1 ol. Topic: Intermolecular forces Of the following compounds, the one with the highest boiling point is: A) CH3CH3 B) CH3CH2Cl C) D) CH3CH2OH E) CH3CH2OCH2CH3 Ans: D This alkane is predicted to have the highest melting point of those shown: A) CH3CH2CH2CH3 B) C) CH3CH2CH2CH2CH3 D) E) Ans: E. a substance, in the gaseous state. 10 mol dm-3 KOH(aq) to form 2-methylpropan-2-ol is an example of nucleophilic substitution. instead of OH- and Cl-. ChemistryPractice Unit Test 2. What intermolecular force does CH3CH2Cl have? We need you to answer this question! If you know the answer to this question, please register to join our limited beta program and start the. These are very strong (one of the strongest ones ever known) and account for all the unique properties of water. Cl2 has a molecular weight less than Br2, and Br2 weight is less than I2. A hydrogen bond is the attraction of hydrogen in one molecule to the oxygen, nitrogen, or fluorine in another molecule. The strongest chemical bond is the Si-F bond. A dipole-dipole is an intermolecular force that occurs between two polar molecules. asked by ChemLover on May 2, 2011; chemistry. 95 New Way Chemistry for Hong Kong A-Level 3A 95 New Way Chemistry for Hong Kong A-Level Book 3A. 第一章 有机化学绪论_高等教育_教育专区 611人阅读|36次下载. Answer: Both compounds have the same strong intermolecular forces of hydrogen bonding, but methanol's O-H bond is much more polarized than methylamine's N-H as oxygen is more electronegative than nitrogen. It targets a protein found on the surface of bacterial cell. The nature of the functional group plays a large effect in the type of. Chapter 8 Inter molecular forces. Imagine the forces are like double sided tape and. Lizabeth T. 1 chloroéthane 1 ol. However, acetone forms hydrogen bonds to water much more effectively than chloroethane does, resulting in greater solubility of acetone in water. Solomons Organic Chemistry. • With increasing chain length, melting and boiling points increase with increasing chain lengths due to increasing strength of intermolecular forces (Van de Waal: London forces, dipole- dipole and hydrogen bonding) • Volatility (ability to evaporate) and flammability (ability to catch fire) decreases down a group. University. van der Waals Forces (or London forces or dispersion forces): 1) The attractive intermolecular forces. It is soluble in water. Chloroethane, commonly known by its old name ethyl chloride, is a chemical compound with chemical formula CH3CH2Cl, once widely used in producing tetraethyllead, a gasoline additive. 2013 (800-930), kl. Hydrogen Bonds: H atom must be attached directly to a N, O, or F. A) Three or more atoms in the molecule B) Presence of one or more polar bonds C) A non-linear structure D) Presence of oxygen or fluorine E) Absence of a carbon-carbon double. txt) or read online for free. Marked set by BGOOD. Thus Krypton forms Atomic solids. 4 Intermolecular forces 4. CS2: Dispersion 3: CH3CH2OH: Dispersion, Dipole-Dipole, Hydrogen 4 SF4: Dispersion, Dipole-Dipole B. Halogen Containing Compounds - Free download as Word Doc (. Rank the following sets of compounds in order of decreasing acidity. CH 3 CH 2 Cl → contains C-H and C-Cl bonds. This acts upon all molecules. When something is thought as wet, it because water molecules are on an object, and most like because of the bonding between the object s molecules, and the. The derivative discontinuity of the exchange-correlation functional. , Amsterdam Conformational analysis of sialyloligosaccharides* Subramaniam Sabesan* K Du Pont, Central Research and Development, Experimental Station, E328/307B Wilmington, DE 19880-0328 (U. It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. Like any other hydrocarbons, alkenes burn in air or oxygen, but these reactions are unimportant. This fully editable Lab Station on Types of Bonds and Intermolecular Forces is meant to get your students out of their seats and engaged in the content. phenylbutyl ether d. The compound with the greatest overall intermolecular forces will have the lowest vapor pressure. in chloroethane, CH3CH2Cl, we need to consider contributions for the. van der Waals Forces (or. Count the number of electron pairs – bond pairs and lone pairs 3. Since these intermolecular forces are weak, the molecules are readily separated. PHYSICAL PROPERTIES CONT. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Answer to 3. Intermolecular forces of attraction in liquid chloroethane are larger due to dipole-dipole attraction; thus a higher boiling point for chloroethane. 14D VAN DER WAALS FORCES 1. Strengths of the intermolecular forces of the molecules exceed the kinetic energy. Since all three of your choices are homonuclear diatomics (two atoms the same in a molecule), there is no polarity in the molecule so no dipole-dipole forces and no hydrogens so no H-bonding. But why? Because the decrease of melting temperature and increase of boiling temperature simply depend on the AMOUNT (quantity) of impurities, not on the quality. instead of OH- and Cl-. It is one of the main types of bonding along with covalent bonding and metallic bonding. These will only be dispersion forces and dipole-dipole interactions. They are the average value of the bond enthalpy for the same bond in different molecules. Induced dipole (dispersion) forces also exist between their molecules, but these are much weaker than the hydrogen bonds. Mori-Sánchez, Paula; Cohen, Aron J. Intermolecular means between molecules, and refers to any forces between the molecules of a substance or mixture. · Question 13 Place The Following Compounds In Order Of Increasing Strength Of Intermolecular Forces. The electron distribution in that molecule is described as unequally shared valence electrons. ; Pettengill, G. This fully editable Lab Station on Types of Bonds and Intermolecular Forces is meant to get your students out of their seats and engaged in the content. dispersion IV. This video gives an introduction to Intermolecular Forces (or IMFs) in liquids. This happens because the strength of the intermolecular forces between the molecules is affected by the orientation of the polar (dipole) bonds. This means that the intermolecular forces are the strongest in butan-1-ol and it has the. among constitutional isomers, branched isomers have a more compact shape, decreased area of contact, decreased van der Waals attractive forces between neighbors, and lower boiling points 1-bromobutane (n-butyl bromide) bp = 100° 2-bromo-2-methylpropane (t-butyl bromide) bp = 72°. each element or compound: a. Strength of London of Forces Molecular mass boiling point* *for atoms and molecules that only have induced dipole-dipole intermolecular forces Boiling Points, # electrons and Molar masses (M) for the Nobel gases Nobel Gas # electrons M (g/mole) Bpt. Use MathJax to format equations. They tend to have low boiling points. (4) (Total 20 marks) 55. layer of molecules, atoms, or ions is. Count the number of electron pairs – bond pairs and lone pairs 3. Hence the intermolecular forces are very high and molecules are highly associated. Because the melting point of a substance is affected by the packing of the molecule on top of the intermolecular forces, boiling point is a better indicator of the strength of the intermolecular forces. Revision Functional Groups and Organic Chemistry ICS Madrid. A Hydrogen bond is a dipole-dipole interaction. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. (Are each of the following dipole-dipole, London dispersion, or hydrogen bonding?) 1) Ethane (CH3CH3) 2) Ethyl Alcohol (CH3CH2OH) 3) Ethyl chloride (CH3CH2Cl). When heated if can also be a gas. A) Three or more atoms in the molecule B) Presence of one or more polar bonds C) A non-linear structure D) Presence of oxygen or fluorine E) Absence of a carbon-carbon double. And that is the substances with the lowest molar mass and the lowest intermolecular forces of attraction. (Hint: The oxygen atom in both structures satisfies the octet rule with two bonds and two lone pairs. While oxygen's octet seems to have been filled, hydrogen only has two electrons for its valence shell. CH3Br What forces are present? CH3CH2CH2OH. Molecular Weight 74. Study 73 Exam 3 flashcards from Kaitlyn W. Nature of the adsorbent Adsorption is a surface phenomenon. Final answer: CH3COF. If P, V, M, T and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by RT P M PM (b) (c) (d) (a) PM. A structural isomer of hexane is ____. It has an ether-like odor and bitter taste. Subjects Covered: Intermolecular forces including: hydrogen bonding, dipole-dipole, and London (dispersion) forces, intramolecualr forces including: ionic, covalent, and metallic. A hydrogen bond is a weak directional bond formed between a δ+ hydrogen atom in one molecule and the lone pair of electrons on a highly electronegative atom in another molecule. CH3CCl3, CH3CH2Cl, NaCl, CCl3CH2OH b. The only intermolecular force that acts upon Diethyl Ether is Dispersion. (1 point) ethene. Ion-Dipole Definition. Arrange the following in order of increasing boiling point: CH4, CH3CH3, CH3CH2Cl, CH3CH2OH. Difficulty Level: Medium.
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