Which of the following processes must exist in equilibrium with the condensation process when a measurement of vapor pressure is made?

A) fusion

B) evaporation

C) sublimation

D) boiling

E) none of these

B) evaporation

Explanation:

Evaporation -

It the process of conversion of liquid state to gaseous state, is known as the process of evaporation.

Condensation -

It the process of conversion of gaseous state to liquid state, is known as the process of condensation.

The state of equilibrium is the one, where the process of condensation equalizes the process of evaporation, and there generates a state of physical balance, i. e., both the forces balances each other.