At a Given Temperature,you Have a Mixture of Benzene (Vapor

question 26

Multiple Choice

At a given temperature,you have a mixture of benzene (vapor pressure of pure benzene = 745 torr) and toluene (vapor pressure of pure toluene = 290.torr) .The mole fraction of benzene in the solution is 0.590.Assuming ideal behavior,calculate the mole fraction of toluene in the vapor above the solution.

• A)0.213
• B)0.778
• C)0.641
• D)0.359
• E)0.590

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