(Q2-14) The relative volatility of benzene to toluene at 1 atm is 2.5. The vapor pressure of benzene is given by Pu(torr) =exp[15.5645- 2602.34/(T(C)+211.271)]. A liquid contains 35 mol% benzene and the rest toluene is heated in a container at 1 atm until 34 mol% of the original liquid is evaporated. Determine the mole fraction of benzene in the liquid phase. 0.278 0.248 0.218 0.318 None of the given answers