In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of_________________?
Correct answer: C. -1.5
- A. 1.5
- B. -0.6
- C. -1.5
- D. 0.6
Explanation
The q-line slope is q/(q−1). Since 40% of the feed is vapour, q, the liquid fraction, is 0.60, giving 0.60/(0.60−1) = −1.5.
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