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JEE Main 10 April 2015 Paper

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Question : 36

Total: 90

A solution at 20°C 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 :

35.0 torr and 0.480
38.0 torr and 0.589
30.5 torr and 0.389
35.8 torr and 0.280

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