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

8-in-mccabe-thiele-method-equilibrium-line-is-drawn-between

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

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.