At __________________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation?
Correct answer: B. Total
- A. Operating
- B. Total
- C. Minimum
- D. Maximum permissible
Explanation
The Fenske equation gives the minimum number of theoretical stages, which occurs at total reflux. At minimum reflux, the required stages approach infinity rather than being calculated by Fenske alone.
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