A binary distillation column operating at 1 atm is to be designed to separate a benzene – toluene mixture.. A feed flowrate of 2500 kmol/h is fed to the distillation column.. A distillate flowrate of 1358.70 kmol/h containing 96 mol% benzene and a bottoms composition of not more than 4 mol% benzene is desired . Reflux ratio is 2.The mole fraction of vapour leaving a plate and the mole fraction of liquid entering the same plate in the stripping section is 0.42 and 0.3,, respectively.. The equilibrium curve for the benzene – toluene system at 1 atm is given in Figure below . Solve graphically using the equilibrium cu r ve and determine the feed composition , quality of feed (i.e feed is saturated liquid, saturated vapour etc ) and the value of q .