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Vapour pressure of a pure liquid from the total vapour pressure of a binary mixture

The same question, asked 2 times: 20 Apr 2025 S2*, 26 Apr 2025 S1. Every wording below, oldest first.

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  1. Question 1

    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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  2. Question 2

    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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