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)`
