Question

what is vapor pressure​

Answer 1

Answer:

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Explanation:

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.

Answer 2

Answer:

If we keep an inverted beaker over a small beaker containing a pure liquid it found that the molecules of the liquid start evaporating in the form of vapour and fill the empty space above the beaker containing the liquid. A time comes when the number molecules evaporating per unit time is equal to the number of molecules condensing. The pressure exerted by the vapour of the liquid in such a case is called the vapour pressure of the liquid.