Question

Which list of solutions is arranged in order from highest boiling point to lowest boiling point?

Answer 1

The hydrocarbons C₂H6, C3H8, and C4H10 can be arranged in order of increasing boiling point as C₂H6 < C3H8 < C4H10.

Step-by-step explanation:

All of these compounds are nonpolar and only have London dispersion forces: the larger the molecule, the larger the dispersion forces and the higher the boiling point. The ordering from lowest to highest boiling point is therefore C₂H6 C3H8 C4H10.

Answer 2

In determining the boiling point of solutions, always take note of the number of ions that will dissociate in the solution. It does not depend on the nature of the substance. The greater the number of ions dissociated, the greater is the boiling point of the solution.