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a ) A distillation column with a total condenser is separating acetone from ethanol. A distillate concentration of x D = 0 . 9 0

a) A distillation column with a total condenser is separating acetone from ethanol. A distillate concentration of xD=0.90 mole fraction acetone is desired. Since CMO is valid, LV= constant. If LV is equal to 0.8, find the composition of the liquid leaving the fifth stage below the total condenser. [5 marks]
b) A distillation column separating acetone and ethanol has a partial reboiler that acts as an equilibrium contact. If the bottoms composition is xB=0.13 mole fraction acetone and the boilup ratio ?barVB=1.0, find the vapor composition leaving the second stage above the partial reboiler. [5 marks]
c) The distillation column in parts a and b is separating acetone from ethanol and has xD=0.9,xB=0.13,LV=0.8 and ?barVB=1.0. If the feed composition is z=0.3(all concentration are mole fraction of more volatile component), find the optimum feed plate location, total number of stages, and required q value of the feed. marks
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