Question: A distillation column separates components A and B from a binary mixture. The column products are: 0.3 mole/h distillate at 95 mole% A, 0.5 mole/

A distillation column separates components A and B from a binary mixture. The column products are: 0.3 mole/h distillate at 95 mole% A, 0.5 mole/ h bottoms and 0.2 mole/ h side stream at 75 mole% A. Feed enters at 47 mole% A liquid at its boiling point. A reflux ratio of 4.8 is used at the top of the column. Additional reflux will be provided by removing 0.4 mole/h vapor as the side stream, condensing it, and returning it to the column as 0.2 mole/h liquid. Calculate the slope of the rectification line.

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