Question

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased. How do rates of evaporation and condensation change initially?

Answer 1

We know that a Vapour pressure is the pressure exerted by the vapour in equilibrium with the liquid at a fixed temperature.

Since the warmth is consistent, the rate of dissipation also endures endless.

When the volume of the container is expanded, the density of the vapour phase decreases.

Here, the rate of collisions of the vapour particles also decreases.

Hence, the rate of condensation decreases initially.