Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for_________________?
Correct answer: B. All A., B. and C.
- A. Constant molal overflow
- B. All A., B. and C.
- C. Constant relative volatility
- D. Total reflux
Explanation
The Fenske relation gives the minimum number of stages at total reflux and is commonly applied with constant relative volatility and constant-molal-overflow assumptions. Hence all three listed conditions are used in the standard treatment.
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