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D1. A continuous, steady-state distillation column with a total condenser and a partial reboiler is separating methanol from water at one atmosphere (see Table 2-7 for data). The feed rate is 100 kmol/h. The feed is 55mol% methanol and 45mol% water. We desire a distillate product that is 90mol% methanol and a bottoms product that is 5mol% methanol. Assume CMO. a. If the external reflux ratio LD=1.25 plot the top operating line. b. If the boilup ratio /B=2.0 plot the bottom operating line. c. Step off stages starting at the bottom with the partial reboiler. Use the optimum feed stage. Report the optimum feed stage and the total number of stages. d. Plot the feed line. Calculate its slope. Calculate q. What type of feed is this