The expression, ln(F/W) = ∫xF xW [dx/y* - x)] is_____________________?
Correct answer: A. Differential distillation equation
- A. Differential distillation equation
- B. For NtoG in absorption for dilute mixture
- C. Slope of q-line in McCabe-Thiele method
- D. For relative volatility
Explanation
The Rayleigh equation for differential, or batch, distillation is ln(F/W) = ∫ dx/(y* − x), with the limits determined by the initial and final liquid compositions. The other choices refer to absorption, the q-line, or relative volatility.
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