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What is the degree of freedom of a mixture composed Liquid H2O, solid Br2 and gaseous CO2, NO2?

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What is the degree of freedom of a mixture composed Liquid H2O, solid Br2 and gaseous CO2, NO2?

(a) 1

(b) 2

(c) 3

(d) 4

I got this question during an interview for a job.

My doubt is from Gibbs Phase Rule in chapter Two Phase Gas – Liquid Systems, Phase Rule and Vapor-Liquid Equilibria of Basic Chemical Engineering

1 Answer

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Best answer
Correct choice is (c) 3

Easiest explanation: F = 2 – 3 + 4 = 3.

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