Question

What is the degree of freedom of a gas mixture composed of O2, H2O and H2O2?

(a) 1

(b) 2

(c) 3

(d) 4

I have been asked this question in a job interview.

I'd like to ask this question from Gibbs Phase Rule topic in section Two Phase Gas – Liquid Systems, Phase Rule and Vapor-Liquid Equilibria of Basic Chemical Engineering

Answer 1

Correct choice is (c) 3

The best I can explain: F = 2 – 1 + 2 = 3.