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A box contains 0.90g of liquid water in ...

A box contains 0.90g of liquid water in equilibrium with water vapour at `27^(@)C`. The equilibrium vapour pressure of water at `27^(@)C` is 32.0 Torr. When the volume of the box is increased, some of the liquid water evaporates to maintain the equilibrium pressure. If all the liquid water evaporates, then the volume of the box must be ____ litre. [nearest integer] (Given R= 0.082 L atm `K^(-1) mol^(-1)`) (Ignore the volume of the liquid water and assume water vapours behave as an ideal gas).

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Knowledge Check

  • The vapour pressure of pure water at 75^(@) is 296 torr the vapour pressure lowering due to 0.1 m solute is

    A
    `0.533`torr
    B
    `0.296`torr
    C
    `0.333` torr
    D
    `0.428` torr

  • In liquid gas equilibrium, the pressure of vapours above the liquid is constant at

    A
    Constant temperature
    B
    Low temperature
    C
    High temperature
    D
    None of these

  • Pressure of 0.210 bat at 37^(@)C . The vapour pressure of pure liquid (vapour pressure of water at 37^(@)C =0.198 bar in bar is

    A
    0.448
    B
    44.8
    C
    0.224
    D
    2.24