Question

8) In McCabe Thiele method, equilibrium line is drawn between

(a) x-y

(b) y-x

(c) x*- y

(d) y*-x

I have been asked this question in a job interview.

Origin of the question is Constant Molar Overflow and Other Assumptions in section Key Fractionation Concepts of Distillation Design

Answer 1

The correct option is (a) x-y

To elaborate: The equilibrium is always drawn between x-y mole ratios, where x is mole of liquid feed and y is the mole of gas at equilibrium conditions.