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At 20 ∘C the vapor pressure of benzene C6H6 is 75 torr and that of toluene...

At 20 ∘C 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.

a) In a solution composed of benzene and toluene that has a vapor pressure of 37 torr at 20 ∘C, what is the mole fraction of benzene?

b) In a solution composed of benzene and toluene that has a vapor pressure of 37 torr at 20 ∘C, what is the mole fraction of toluene?

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Answer #1

a) Mole fraction of benzene = 0.283

b) Mole fraction of toluene = 0.717

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