At 20oC, the vapor pressure of toluene is 22 millimeters of mercury as well as that of benzene is 75 millimeters of mercury. An ideal solution, equimolar in toluene and benzene, isprepared. At 20oC, explain what is the mole fraction of benzene in the vapor equilibrium with this solution?
(a) 0.23
(b) 0.29
(c) 0.50
(d) 0.77
(e) 0.83