Problem 1 A tray tower is to be designed to continuously distill 450 lbmol/h of a binary mixture of 60 mol% benzene and 40 mol% toluene. A liquid distillate and a liquid bottoms product of 95 mol% and 5 mol% benzene, respectively, are to be produced. The feed is preheated so that it enters the column with a molar percent vaporization equal to the distillate-to-feed ratio. Use the McCabe-Thiele method to compute the following, assuming a uniform pressure of 1 atm (101.3 kPa) throughout the column: (a) Minimum number of theoretical stages, Nmin: (b) Minimum reflux ratio, Romin; and (c) Number of equilibrium stages N. for a reflux-to-minimum reflux ratio, Rp Rp, min of 1.3 and the optimal location of the feed stage. The relative volatility of benzene-tolune is a = 2.45. The VLE equilibrium curve can be generated by plotting y Vs x from OK 1 + (-1)x The plot is included in the next page. Make several hard copies to work on the questions