Question

A gas mixture with 10% H2 with pressure 15 Pa at 27^oC at the rate 20 liter/s is passed through a reactor and products a gas mixture with 30% H2 with pressure 25 Pa at 27^oC, what is the rate of product?

(a) 4 liter/s

(b) 10 liter/s

(c) 24 liter/s

(d) 30 liter/s

The question was asked during an interview.

I'd like to ask this question from Material Balances Involving Ideal Gases topic in section Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer 1

Right answer is (a) 4 liter/s

To explain I would say: H2 balance: 0.1*15*20 = 0.3*25*P, => P = 4 liter/s.