Question

What is vapour pressure ?

Class 11

Answer 1

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Vapour Pressure is the Pressure exerted by the vapour phase at the surface of the liquid at a given temperature when both the phase are in Dynamic Equilibrium.

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Answer 2

Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. The equilibrium vapor pressure is an indication of a liquid's evaporation rate.