A solution at 20oC 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:
Held on 10 Apr 2015 · Verified 6 Jul 2026.
30.5 torr and 0.389
35.0 torr and 0.480
38.0 torr and 0.589
35.8 torr and 0.280
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