Can you help me solve questions 25,26 and 27? 25. Both cis-1,2,-dichloroethylene and trans-1,2,-dichloroethylene have the same molecular formula: C₂H₂Cl₂.However, the cis compound has a dipole moment, while the trans compound does not. One of these species has aboiling point of 60.3°C and the other has a boiling point of 47.5°C. Which compound has which boiling point?26. Rank each of the following groups of substances in order of increasing boiling point based on the structuresof the molecules (do not look at published references for the precise boiling points):a. NH3, He, CH3F, CH4b. CH3Br, Ne, CH3OH, CH3CNc. CH4, SiH4, GeH4, SnH427. Fluoromethane (CH3F) and methanol (CH3OH) have approximately the same molecular weight. However,the boiling point of CH3OH is 65.15°C while the boiling point of CH3F is -78.4°C. Explain the difference inboiling points.28. In each of the following groups of substances, indicate which has the highest boiling point. You should beable to reason this out without looking at a table of chemical boiling points.HCIH3CCF3H₂O CC14 NaCla.b. KF0₂OH₂O CaO 1₂29. Which of the following liquids does not exhibit hydrogen bonding?H₂CH3CH₂CH₂OH5 To a large extent, the boiling point of a liquid is determined by the strength of the intermolecular forcesin the liquid. These intermolecular forces are largely determined by the structure of the individual molecules.Table 1. Boiling points of selected compounds. Alkanes are hydrocarbons containing only single bonds andatoms of C and H. Ketones contain a C=O group (double bond between O and C). Alcohols contain an O-H group(single bond between O and H). MW means molecular weight.bp (°C)-42.1AlkaneCH3CH2CH3propaneCH3(CH2)2CH3butaneCH3(CH2)3 CH3pentaneCH3(CH2)4CH3hexaneCH3(CH2)8CH3decaneMW(g/mole)44.158.172.2-0.514236.186.2 69174AlcoholCH3CH2CH2OH1-propanolCH3(CH2)2CH2OH1-butanolCH3(CH2)3CH2OH1-pentanolCH3(CH2)4CH2OH1-hexanolCH3(CH2)8 CH2OH1-decanolKetone.CH₂CCH311O acetoneCH3CCH2CH3O 2-butanoneCH₂C(CH₂)2CH3O 2-pentanoneCH3C(CH,);CH3O 2-hexanoneCH,C(CH),CH3Ö 2-decanoneMW(g/mole)60.1102bp (°C)74.1 11797.488.2 137158158229MW(g/mole)58.172.1100bp (°C)15686.1 102-56.279.6128210EN for H=2.1, EN for O = 3.5Electronegativity (EN) values for C, H, and O are:EN for C = 2.5,The difference in EN between two atoms is symbolized as AEN.A bond between two nonmetal atoms is categorized as "nonpolar" if 0 1.9 and if the compound is composed of both metal and nonmetal.200trogo 207yo-20/SO23. Considering the AEnon po4. Considering the 4lodu

25). Answer : Since you have posted multiple questions, we will provide the solution only to first…

25. Both cis-1,2,-dichloroethylene and trans-1,2,-dichloroethylene have the same molecular formula: C₂H₂Cl₂. However, the cis compound has a dipole moment, while the trans compound does not. One of these species has a boiling point of 60.3°C and the other has a boiling point of 47.5°C. Which compound has which boiling point?

25. Both cis-1,2,-dichloroethylene and trans-1,2,-dichloroethylene have the same molecular formula: C₂H₂Cl₂. However, the cis compound has a dipole moment, while the trans compound does not. One of these species has a boiling point of 60.3°C and the other has a boiling point of 47.5°C. Which compound has which boiling point?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter7: Molecular Structures

Section: Chapter Questions

Problem 80QRT

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