As the attractive forces between the molecules of a liquid increase,its equilibrium vapor pressure

Question

Quizplus · Accepted Answer

Equilibrium vapor pressure is the pressure exerted by the vapor over a liquid when the rates of evaporation and condensation are equal. As the attractive forces between the molecules of a liquid increase, it becomes harder for the molecules to escape into the gas phase, which means the rate of evaporation decreases. As a result, the equilibrium vapor pressure decreases. Therefore, option B is correct.

As the Attractive Forces Between the Molecules of a Liquid