With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?
Correct answer: B. Decreases
- A. Increases
- B. Decreases
- C. Remain same
- D. May increase or decrease; depends on system
Explanation
During constant-reflux batch distillation, the more volatile component is removed preferentially, so its concentration in the still decreases with time. Consequently, the light-component composition of the overhead vapour generally decreases.
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