When a liquid and its vapour are at equi...

When a liquid and its vapour are at equilibrium and the pressure is suddenly decreased, cooling occurs.

Text Solution

Verified by Experts

True. When the pressure is decreased, the boiling point decreases. Therefore, cooling occurs because evaporation is endothermic and cooling is caused.

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When a liquid is heated its vapour pressure

continuously increases

continuously decreases

increase and becomes constant at b.pt of liquid

records no predictable change

A liquid boils when its vapour pressure equals

The atmospheric pressure

Pressure of `76.0 cm` column of mercury

The critical pressure

The dew point of the surroundings

The vapour pressure at equilibrium of a liquid in a closed vessel depends on ______.

Pressure

Concentration

temperature

volume