Two liquid A and B have vapour pressure in the ratio ` P_A^(@) : P_B^(@)`=1.3 at a certain temperature.Assume A and B from an ideal solution and the ratio of mole fractions of A to B in the vapour phase is 4 : 3, then the mole fraction of B in the solution at the same tempreature is :
A
`1/5`
B
`2/3`
C
`4/5`
D
`1/4`
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The correct Answer is:
a
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