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A solution at is composed of 1.5 mol of benzene and 3.5 mol of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are 74.7 torr and 22.3 torr respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively:
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The correct answer is:
38.0 torr and 0.589
According to Raoult's Law
By Dalton's law to vapour phase
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