Problem 1 Mixture of 40% Benzene with toluene is distilled in a column to give a product of 95mol% benzene and a waste of Smol% Benzene, using reflux ratio of 4 1. Calculate the composition on the 2nd plate from top 2. Using McCable-Thiele method, determine the number of plates required and position of the feed stage to column as liquid at boiling point 3. find minimum reflux ratio possible 4. find minimum Number of plates. Mole fraction of Benz in liq 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Mole fraction of Benz in vap 0.22 0.38 0.51 0.63 0.7 0.78 0.85 0.91 0.96