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7.1      A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased .

(c)      What happens when equilibrium is restored finally and what will be the final vapour pressure?

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When equilibrium is restored, the rate of evaporation is equal to the rate of condensation. The temperature is constant and the volume is changed. The vapour pressure is temperature dependent, not volumes. So, that final vapour pressure is equal to the initial vapour pressure.

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