Question

In a batch process, 5 mole of H2 and 3 mole of CO2 entered a vessel with some CO2, if 10 mole of product leaves the vessel, what is the percentage of H2 in the product?

(a) 10%

(b) 30%

(c) 50%

(d) 80%

I had been asked this question by my college professor while I was bunking the class.

I'm obligated to ask this question of Material Balances for Batch and Semi-Batch Processes topic in portion Introduction to Material Balances of Basic Chemical Engineering

Answer 1

Correct choice is (c) 50%

The explanation is: Percentage of H2 in the product = 5/10*100 = 50%.