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The molar volume of X(l)(d=0.9g/mL) incr...

The molar volume of X(l)(d=0.9g/mL) increases by a factor of 3000 as it vaporises at `27^(@)C` and that of Y(l)(d=0.88 g/mL) increases by a factor of 8000 at `27^(@)`. A miscible liquid solution of X and Y at `27^(@)`C has a vapour pressure of 50 torr. The mole fraction of Y in solution is : ( Given : 0.082 atm/L/mol/K, Molar mass of X=75, Molar mass of Y=88)

A

0.48

B

0.52

C

0.62

D

0.247

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The correct Answer is:
A
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