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MHT CET Chemistry question

ChemistrySolutionsMHT CET

A solution has 1 ∶ 3 ratio of cyclopentane to cyclohexane. The vapour pressure of the pure compounds at 25 ℃ are 331 mm Hg for cyclopentane and 113 mm Hg for cyclohexane. What is the mole fraction of cyclopentane in the vapour above the solution?

Answer: (C)

Solution

, ; , mm Hg;

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Question ID VK-061192