REVIEW QUESTIONS

Chapter 11

  1. _For each compound listed below, identify the intermolecular forces present. Use (-) to indicate non-predominant forces and (+) to indicate predominant force.
Compound Intermolecular Forces
Dispersion Force Dipole-Dipole Force Hydrogen bonding
HBr
  1. Predict the order of decreasing vapor pressure for , and . Give an explanation for your choices.
  2. Arrange the following substances in order of decreasing boiling point. Explain your answer.





  3. Shown below are the two isomers of 1,2-dichloroethene and their respective boiling points:
B.p. cis isomer trans isomer
60.3 47.5
Give an explanation for the larger boiling point of the cis isomer.
5. Trimethylamine, and propylamine , have fishy, ammonia-like odors. Explain why propylamine has a lower vapor pressure than trimethylamine.
6. Explain the observed trend in the boiling points of the compounds listed below: