Two liquids A and B have vapour pressure in the ratio P A ∘ : P B ∘ = 2 : 3 at a certain temperature. Assume A and B form an ideal solution and the ratio of mole fractions of A to B in the vapour

Question

Two liquids A and B have vapour pressure in the ratio P A ∘ ​ : P B ∘ ​ = 2 : 3 at a certain temperature. Assume A and B form an ideal solution and the ratio of mole fractions of A to B in the vapour phase is 1 : 3 , then the mole fraction of A in the solution at the same temperature is

TestHub · Accepted Answer

Let the vapor pressure of pure A ​ = 2 P . Y A ​ = X A ​ P A ∘ ​ + ( 1 − X A ​ ) P B ∘ ​ P A ∘ ​ X A ​ ​ 4 1 ​ = 2 X A ​ P + 3 P ( 1 − X A ​ ) 2 P X A ​ ​ X A ​ = 3 1 ​

Chemistry - Liquid Solution Question with Solution | TestHub

Options:

Doubts & Discussion