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Question: a 100 mol ethanol 900 mol water feed is batch...

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A 10.0 mol% ethanol 90.0 mol% water feed is batch distilled at 1.0 atm. The batch distillation system consists of a still pot plus a column with the equivalent of nine equilibrium contacts and a total condenser. External reflux ratio = 2/3. The initial charge to the still pot is 1000.0 kg. The final still pot concentration is 0.004 mole fraction ethanol. Find Wfinal, Dtotal, and xD,avg. Note: Stepping off ten stages for a number of operating lines sounds like a lot of work. However, after you try it once, you will notice that there is a shortcut to determining a relationship between xD and xW.

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