Vapor pressure of a liquid changes with …… of the liquid.

Options

A. volume
B. surface area
C. temperature
D. all of these

Answer

C

Explanation

Equlibrium vapor pressure is the maximum vapor pressure a liquid exerts at a given temperature and it is a constant at constant temperature . Because the rate of evaporation increases with increasing temperaure , vapor pressures of liquids always increase as temperature increases.
As long as some liquid remains in contact with the vapor , the equilibrium vapor pressure does not depend on the amount (volume of surface area ) of the liquid.
The number of molecules with higher kinetic energies is greater at higher temperature , and therefore , so is the evaporation rate. Notice that the increase in vapor pressure is not linear with temperature.