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 ?

At 300 K, vapour pressure of pure benzene and pure toluene are 100mm a

1.	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 ?
Answer» `(3)/(5)` `(6)/(5)` `(1)/(3)` `(1)/(6)` ANSWER :D