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Problems and exercisesPhysical Properties

1. Compare with the alkanes

Cyclohexane boils at 80.7 °C and melts at 6.6 °C; hexane boils at 69 °C and melts at −95 °C. Explain the differences.

2. Order by density

Arrange in order of increasing density: water, hexane and cyclohexane.

3. True or false?

  1. Cycloalkanes are soluble in water because they are cyclic.
  2. The physical constants of cycloalkanes are slightly higher than those of alkanes with the same number of carbons.
  3. Cyclopropane is a gas at room temperature.

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