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Vapour pressure of pure benzene is 119 t...

Vapour pressure of pure benzene is 119 torr and that of toluene is `37.0` torr at the same temperature. Mole fraction of toluene in vapour phase which is in equilibrium with a solution of benzene and toulene having a mole fraction of toluene `0.50`, will be

A

`0.137`

B

`0.205`

C

`0.237`

D

`0.435`

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The correct Answer is:
C
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