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Raoult's law for a mixture of two volatile liquids

This type of question, asked 4 times: 4 May 2023 S1, 20 Apr 2025 S2, 26 Apr 2025 S1, 26 Apr 2025 S2. All 4 questions below, oldest first.

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  1. Question 1

    4 May 2023 S1

    54
    Calculate vapour pressure of a solution containing mixture of 2 moles of volatile liquid A and 3 moles of volatile liquid B at room temperature. PA∘=420P_A^\circ = 420, PB∘=610P_B^\circ = 610 mmHg

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  2. Question 2

    20 Apr 2025 S2

    78
    Calculate vapour pressure of pure volatile liquid BB at given temperature if mole faction of liquid BB and vapour pressure of pure volatile liquid A are 0.4 and 400 mm Hg respectively.
    [Ptotal =600 mmHg]\left\lbrack P_{\text{total~}}= 600\text{ }mmHg \right\rbrack

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  3. Question 3

    26 Apr 2025 S1

    79
    Calculate vapour pressure of volatile liquid A at given temperature if mole fraction and vapour pressure of volatile liquid B are 0.4 and 900 mm Hg respectively [Ptotal =600 mmHg]\left\lbrack P_{\text{total~}}= 600\text{ }mmHg \right\rbrack

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  4. Question 4

    26 Apr 2025 S2

    87
    Calculate the mole fraction of pure liquid BB in solution if total vapour pressure of solution, vapour pressure of pure liquid A and vapour pressure of pure liquid B are 500 mm Hg , 400 mm Hg and 575 mm Hg respectively at given temperature.

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