A distillation column will be used to separate benzene from a mixture containing 60% benzene and 40% toluene, by mass, at 1 atm pressure. The feed rate is 20000 kg/h and the feed temperature is 298 K. The distillate desired compound is 96% mol% and the subproduct is 5 mol% benzene. The reflux rate is taken to be 2 times the minimum reflux rate and the reflux is returned to the column as a saturated liquid. A constant relative volatility can be accepted as 2.54 for benzene-toluene. My system includes an all condenser and part evaporator. Constant molar flow can be assumed. 1. Calculate the following using the graphical method. a. Minimum backflow rate, b. required number of theoretical steps, c. Feed stage location, D. actualnumber ofstepsandcolumnheight to. column diameter f. Condenser and evaporator thermal loads g. Composition of vapor and liquid leaving the 3rd stage down the condenser what is it, estimate the temperature of the stage. h. chart the temperature according to the steps 2. Using the algebra method, accepting that the feeding is made to the 4th Rack; a. The required number of theoretical steps, b. Calculate the composition of the vapor and liquid leaving the 6th stage.