1.

Two liquids A and B have vapour pressure in the ratio P_(A)^(0):P_(B)^(0)=1:3 at a certain temperature . Assume A and B from an ideal solution and the ratio of mole fraction of A to B in the vapour phase is 4:3 . Then the mole fraction of B in the solution at the same temperature is :

Answer»

`1//5`
`2//3`
`4//5`
`1//4`

ANSWER :A


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