Question

The concentration of multi component mixture in mass transfer process, can be represented by

(a) Mass concentration

(b) Molar concentration

(c) Molar density

(d) Each quantity is important

This question was addressed to me during an online exam.

Question is taken from Minimum Reflux for System Containing Distributed Monkeys topic in section Column Process Design, Optimization and Shortcut Calculations of Distillation Design

Answer 1

Correct choice is (d) Each quantity is important

The explanation is: The concentration of multi component mixture can be represented by all molar forms independent of property, so concentration as well as density are equally important.