Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm. Hg respectively at the same temperature. If xA and xB are the mole fraction of A and B in soluti

Question

Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm. Hg respectively at the same temperature. If xA and xB are the mole fraction of A and B in solution while A v and B v are the mole fraction of A and B in vapour phase then,

(A) B A B A y y x x
(B) B A B A y y x x
(C) ) y x ( ) y x ( B B A A
(D) B A B A y y x x

Prashant Kotian · Accepted Answer

Correct answer: A. A P < B P B A P P < 1 B A y y = B B A A X P X P B A B A x x y y < 1  B A y y < B A x x

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