aliquid containing 60 mol%tolueneand40 mol%benzeneiscontinuously distilledin asingle equilibrium stageat 1 atm. Whatpercentofbenzenein thefeed leavesasvapor if 90% of thetoluene enteringin thefeed leavesasliquid?Assumearelative volatilityof2.3and obtain the solution graphically.