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Solution: At 20 oC the vapor pressure of benzene C6H6 is 75 torr and that of toluene C7H8 is 22 torr. Assume that benzene and toluene form an ideal solution.In a solution composed of benzene and toluene that has a vapor pressure of 36  torr at 20 oC, what is the mole fraction of toluene?

Problem

At 20 oC the vapor pressure of benzene C6H6 is 75 torr and that of toluene C7H8 is 22 torr. Assume that benzene and toluene form an ideal solution.

In a solution composed of benzene and toluene that has a vapor pressure of 36  torr at 20 oC, what is the mole fraction of toluene?