Question

What is the fraction of N2 in purge stream?

(a) 0.04

(b) 0.05

(c) 0.16

(d) 0.4

The question was asked in quiz.

This interesting question is from Bypass and Purge topic in section Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer 1

Correct choice is (b) 0.05

Best explanation: N2 balance: 10*0.2 – 10*0.2*0.8 = 7.5*x, => x = 0.05.