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cylinder fitted with a movable piston co...

cylinder fitted with a movable piston contains liquid water in equilibrium with water vapour at `25^(@)C`. Which operation result in a decrease in the equilibrium vapour pressure?

A

Moving the piston downward a short distance

B

Removing a small amount of vapour

C

Removing a small amount of the liquid water

D

Dissolving salt in the water

Text Solution

Verified by Experts

The correct Answer is:
D
Additional of salt always lowers the vapour pressure . Also, vapur pressure of a liquid is its characterstic pressure and depends only on temperature.
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