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The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K . Total vapour pressure is 600 mm Hg.What is the composition of the two liquids in vapour phase?

Options

  1. AComposition of A and B in vapour phase is 0.4 and 0.6 respectively.
  2. BComposition of A and B in vapour phase is 0.2 and 0.8 respectively.
  3. CComposition of A and B in vapour phase is 0.3 and 0.7 respectively.
  4. DComposition of A and B in vapour phase is 0.5 and 0.5 respectively.

Correct answer

C. Composition of A and B in vapour phase is 0.3 and 0.7 respectively.

Step-by-step solution

Correct Option is : (C) Composition of A and B in vapour phase is 0.3 and 0.7 respectively.

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