Question

A reaction has produced 1.5 moles of water and 2 liter of bone dry air at 27^oC and 25 atm, what is the humidity?

(a) 5%

(b) 25%

(c) 50%

(d) 75%

The question was posed to me during an interview.

I would like to ask this question from Material Balance Problems Involving Partial Saturation in portion Two Phase Gas – Liquid Systems, Phase Rule and Vapor-Liquid Equilibria of Basic Chemical Engineering

Answer 1

Correct answer is (d) 75%

The best I can explain: Moles of bone dry air = 2, => Humidity = 1.5/2*100 = 75%.