The pressure exerted by a vapour with its condensed phases (solid or liquid) in a closed system at a specific temperature is referred to as vapour pressure, also known as vapour equilibrium pressure.
It is well known that the equilibrium vapour pressure may be used to estimate how quickly a liquid will evaporate.
It is recognized that there is a relationship between the tendency of particles to escape from a liquid (or a solid).
A substance is often said to as volatile if it has a high vapour pressure at room temperature. It should be mentioned that vapour pressure refers to the pressure that a vapour exhibits above a liquid surface.
