The column operates at a pressure of 1 atm. The feed flow is 1 mol / s, of which 30 mol% is ethanol and the rest is n-butanol.

i) What is the flow and composition of the bottom product when a 0.3 mol / s distillation of 93 mol% ethanol is desired from the column.

ii) The feed is liquid at its boiling point. Calculate the number of ideal steps required by the McCabe method when the recovery ratio can initially be assumed to be 1.5 times the minimum recovery ratio.

iii) What is the Boiling Point of Distillate, Feed Point, and Substrate when they are liquids at their boiling points.