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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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Knowledge Check

  • When a liquid is heated its vapour pressure

    A
    continuously increases
    B
    continuously decreases
    C
    increase and becomes constant at b.pt of liquid
    D
    records no predictable change

  • A liquid boils when its vapour pressure equals

    A
    The atmospheric pressure
    B
    Pressure of `76.0 cm` column of mercury
    C
    The critical pressure
    D
    The dew point of the surroundings

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

    A
    Pressure
    B
    Concentration
    C
    temperature
    D
    volume