Question

What is the total pressure of a system having 25% CO2 with 4 atm partial pressure and 30% O2 with 10 atm partial pressure, and 45% SO2 with partial pressure 20 atm?

(a) 9 atm

(b) 13 atm

(c) 17 atm

(d) 19 atm

The question was asked by my college director while I was bunking the class.

My question is taken from Vapor-Liquid Equilibria in Binary Systems in division Two Phase Gas – Liquid Systems, Phase Rule and Vapor-Liquid Equilibria of Basic Chemical Engineering

Answer 1

Right answer is (b) 13 atm

The explanation is: P = 0.25*4 + 0.3*10 + 0.45*20 = 1 + 3 + 9 = 13 atm.