The McCabe Thiele method
(a) Uses molal units for material and energy balance
(b) Uses weight fractions to express liquid and vapor composition
(c) Can use any type of units
(d) Is more accurate than ponchan savarit method
I have been asked this question during an online interview.
My doubt stems from Minimum Reflux for System Containing Distributed Monkeys in division Column Process Design, Optimization and Shortcut Calculations of Distillation Design