2. A rectification column is fed with 100kgmol/h of a mixture of 50mol% benzene and 50 mel\% toluene at 101.32kPa abs pressure. The feed is in liquid phase at the boiling point. The distillate is to contain 90 mol \% benzene and the bottoms 10 mol\% benzene. a) The reflux ratio is 4.52:1. Calculate the kg mol/h distillate, kg mol/h bottoms, and the number of theoretical trays needed using the McCabe-Thiele method. b. . b) Repeat the calculation but use a feed that is saturated vapor at the dew point. Calculate the minimum reflux ratio ( Rm ), minimum number of theoretical plates at total reflux and theoretical number of trays at an operating reflux ratio of 1.5(Rm) : c) Determine actual number of trays if the Muuphree tray efficiency is 80% for part a) (Hint: Draw xy equilibrium diagram of the benzene-toluene system using the data below. x refers to mole fraction of water in liquid and y refers to mole fraction of water in vapor.)