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Benzene (C(6)H(6), 78 g//mol) and tolue...

Benzene `(C_(6)H_(6), 78 g//mol)` and toluene `(C_(7)H_(8),92g//mol)` form an ideal solution. At `60^(@)C` the vapour pressure of pure benzene and pure toluene are `0.507` atm and `0.184` atm, respectively. The mole fraction of benezen in a solution of these two chemicals that has a vapour preesure of `0.350` atm at `60^(@)C`, will be :

A

`0.514`

B

`0.690`

C

`0.486`

D

`0.190`

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The correct Answer is:
A
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