Question

The rate of flow in stream with 40% O2 and 60% CO2 is 10 mole/hr, the contained was initially filled with 6 mole of O2, what will be the percentage of O2 in product stream?

(a) 12.5

(b) 25

(c) 50

(d) 62.5

I had been asked this question in class test.

The doubt is from Multiple Component Systems in chapter Introduction to Material Balances of Basic Chemical Engineering

Answer 1

Correct answer is (d) 62.5

To explain I would say: Percentage of O2 = 10/(10 + 6)*100 = 62.5%.