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MHT CET Chemistry question

ChemistrySolutionsMHT CET

The vapour pressure of a pure liquid A is 70 torr at 27 C. It forms an ideal solution with another liquid B. The mole fraction of B is 0.2 and the total vapour pressure of the solution is 84 torr at 27 C. The vapour pressure of pure liquid B at 27 C is

Answer: (D)

Solution

, so torr; 14

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Question ID VK-061074