Answer
Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The vapor pressure is an indication of a liquid's evaporation rate.
Work Step by Step
Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The vapor pressure is an indication of a liquid's evaporation rate.
At equilibrium the rate of evaporation is not zero, so the vapor pressure increases up to the point where the rates of evaporation equals rate rate of condensation. At this point, the system is in dynamic equilibrium.
