A solution at $20^{\circ}C$ is composed of $1.5\; mol$ of benzene and $3.5\; mol$ of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are $74.7\; torr$ and $22.3\; torr$, respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively :

Question

( A ) 30.5 torr and 0.389
( B ) 35.8 torr and 0.280
( C ) 35.0 torr and 0.480
( D ) 38.0 torr and 0.589