The vapour pressures of pure benzene and toluene are 160 and 60mm Hg respectively. The mole fraction of benzene is vapour phase in contact with equimolar solution of benzene and toluene is

Question

The vapour pressures of pure benzene and toluene are 160 and 60mm Hg respectively. The mole fraction of benzene is vapour phase in contact with equimolar solution of benzene and toluene is, 0.073, 0.027, 0.27, 0.73

MARKS App · Accepted Answer

P T = 160 × 1 2 + 60 × 1 2 = 110 P B = P B o × B = 160 × 1 2 P B = P T X B ⇒ 80 = 110 Y B Y B = 80 110 = 0.73

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