(a) Use Raoult’s law to show that for an ideal solution of B and C, the B mole fraction in...

(a) Use Raoult’s law to show that for an ideal solution of B and C, the B mole fraction in the vapor phase in equilibrium with the solution is

(b) At 20°C the vapor pressure of benzene (C6H6) is 74.7 torr and that of toluene (C6H5CH3) is 22.3 torr. For solutions of benzene plus toluene (assumed ideal) in equilibrium with vapor at 20°C, plot  versus  for benzene. Repeat for toluene.