b) A continuous distillation column is fed with A and B mixture at its boiling point containing 35% A. The top product is to contain 95 mole % A and bottom product not to contain more than 5 mole % A. The reflux ratio is 1.5 times the minimum. The equilibrium data is given below: 9 Marks X 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 0.23 0.38 0.51 0.62 0.70 0.78 0.86 0.92 0.97 1.00 Determine the number of theoretical plates and the position of feed plate