Distillation using mccabe-thiele method. a rectification column is fed 100 kg mol/h of a mixture of 50 mol % benzene and 50 mol % toluene at 101.32 kpa abs pressure. the feed is liquid at the boiling point. the distillate is to contain 90 mol % benzene and the bottoms 10 mol % benzene. 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.