Compare the boiling points of the various isomeric hydrocarbons shown in the table below. Notice the relationship between boiling point and structure; branched-chainhydrocarbons have lower boiling points than the unbranched isomer. Speculate on possible reasons for this trend. Why might the intermolecular forces be slightlydifferent in these compounds?Compound Boiling Point (°C)68.9Hexane3-Methylpentane2-Methylpentane2,3-Dimethylbutane2,2-Dimethylbutane63.260.358.049.7The more branched structure has smaller exposed surface and hence weaker dispersion intermolecular forces.The more branched structure has larger exposed surface and hence weaker dispersion intermolecular forces.The more branched structure has larger exposed surface and hence stronger dispersion intermolecular forces.The more branched structure has smaller exposed surface and hence stronger dispersion intermolecular forces.

The intermolecular force of attraction that is present in hydrocarbons is London or Dispersion…

Compare the boiling points of the various isomeric hydrocarbons shown in the table below. Notice the relationship between boiling point and structure; branched-chain hydrocarbons have lower boiling points than the unbranched isomer. Speculate on possible reasons for this trend. Why might the intermolecular forces be slightly different in these compounds? Compound Boiling Point (°C) 68.9 Hexane 3-Methylpentane 2-Methylpentane 2,3- Dimethylbutane 2,2- 63.2 60.3 58.0 49.7 Dimethylbutane O The more branched structure has smaller exposed surface and hence weaker dispersion intermolecular forces. O The more branched structure has larger exposed surface and hence weaker dispersion intermolecular forces. O The more branched structure has larger exposed surface and hence stronger dispersion intermolecular forces. O The more branched structure has smaller exposed surface and hence stronger dispersion intermolecular forces.

Compare the boiling points of the various isomeric hydrocarbons shown in the table below. Notice the relationship between boiling point and structure; branched-chain hydrocarbons have lower boiling points than the unbranched isomer. Speculate on possible reasons for this trend. Why might the intermolecular forces be slightly different in these compounds? Compound Boiling Point (°C) 68.9 Hexane 3-Methylpentane 2-Methylpentane 2,3- Dimethylbutane 2,2- 63.2 60.3 58.0 49.7 Dimethylbutane O The more branched structure has smaller exposed surface and hence weaker dispersion intermolecular forces. O The more branched structure has larger exposed surface and hence weaker dispersion intermolecular forces. O The more branched structure has larger exposed surface and hence stronger dispersion intermolecular forces. O The more branched structure has smaller exposed surface and hence stronger dispersion intermolecular forces.

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter11: Intermolecular Forces And Liquids

Section: Chapter Questions

Problem 59SCQ

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