Aliquid stream containing 52.0 mole% benzene and the balance toluene at 20.0C is fed to a continuous single-stage evaporator at a rate of 1320 mol/s. The liquid and vapor streams leaving the evaporator are both at 91.0C. The liquid phase leaving the evaporator is measured to be 37.5 mole% benzene. Physical Property Tables Pressure and Vapor Composition If the system obeys Raoult's Law and is in steady state, what are the operating pressure and vapor phase composition? mm Hg P Ybenzene