Question

The term S in the Fenske’s equation, is given as

(a) (xLKxHK)D(xLKxHK)B

(b) (xLKxHK)D(xLKxHK)L(xLKxHK)R

(c) (xLKxHK)L(xLKxHK)V

(d) (xLKxHK)HK(xLKxHK)LK

The question was posed to me in an internship interview.

I want to ask this question from Reflux Stage Relationships topic in section Column Process Design, Optimization and Shortcut Calculations of Distillation Design

Answer 1

Correct option is (a) (xLKxHK)D(xLKxHK)B

To explain: The term S in the Fenske’s equation is given as (xLKxHK)D(xLKxHK)B, representing High and Low keys of the gas and liquid phases.