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At 300 K, vapour pressure of pure benzen...

At `300 K`, vapour pressure of pure benzene and pure toluene are `100mm` and `30 mm` of Hg respectively. Also benzene and toluene is prepared by mixing `3.0` moles of toluene in `2.0` moles of benzene at `300 K`. Anser the following questions:
If the given solution is distilled by lowering the external pressure at constant `300 K`, what will be the mole fraction of benzene in the last drop of liquid condensed ?

A

`(3)/(5)`

B

`(6)/(5)`

C

`(1)/(3)`

D

`(1)/(6)`

Text Solution

Verified by Experts

The correct Answer is:
D
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