Vapor pressure and partial pressure
Vapor pressure is the pressure exerted by the vapor of a substance when it is in equilibrium with its liquid or solid phase at a given temperature. It is an indication of the tendency of a substance to evaporate or sublimate.
Partial pressure refers to the pressure exerted by an individual component (gas or vapor) in a mixture of gases. In a gas mixture, each component exerts a partial pressure that is directly proportional to its mole fraction in the mixture. The sum of all the partial pressures in a gas mixture equals the total pressure.
In the context of vapor pressure, the term "partial pressure" is often used to describe the pressure exerted by the vapor component of a liquid or solid substance in a mixture with other gases. The partial pressure of the vapor component is directly proportional to its vapor pressure at a given temperature, and it contributes to the total pressure of the gas mixture.
Overall, vapor pressure and partial pressure are related concepts that describe the pressure exerted by substances in different states (vapor, gas, etc.) in equilibrium or in a mixture.