The partial pressure of vapor molecules above the surface of a liquid at equilibrium at a given temperature is the …… of the liquid at that temperature.

Options

A. equilibrium vapor pressure
B. saturated vapor pressure
C. vapor pressure
D. all of these

Answer

D

Explanation

When a liquid evaporates , its gas molecules exert a pressure . Initially , the pressure exerted by vapors on the walls of the container increases. After some time , it becomes constant, when an equilibrium is established between the liquid phase and the vapour phase. The pressure of vapor measured under dynamic equilibrium vapor pressure or saturated vapor pressure or , simply , vapor pressure.