EVERYDAY SCIENCE

Detailed explanation-1: -A liquid’s vapour pressure is a vapour’s equilibrium pressure above its liquid (or solid); that is, the vapour pressure resulting from a liquid (or solid) evaporation above a liquid (or solid) sample in a closed container.

Detailed explanation-2: -Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour state, and it increases with temperature. The temperature at which the vapour pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is called the boiling point of the liquid.

Detailed explanation-3: -The vapor pressure of a liquid is the point at which equilibrium pressure is reached, in a closed container, between molecules leaving the liquid and going into the gaseous phase and molecules leaving the gaseous phase and entering the liquid phase.

Detailed explanation-4: -The pressure exerted by the gas in equilibrium with a solid or liquid in a closed container at a given temperature is called the vapor pressure.

Detailed explanation-5: -Volatile liquids are liquids with high vapor pressures, which tend to evaporate readily from an open container; nonvolatile liquids have low vapor pressures. When the vapor pressure equals the external pressure, bubbles of vapor form within the liquid, and it boils.