Question

1 mole of Carbon dioxide enters in a reactor at a rate of 0.25 kg/s and leaves it at the rate of 1 kg/s, what are the number of moles of carbon dioxide leaves the reactor?

(a) 0.25

(b) 0.5

(c) 0.75

(d) 1

This question was addressed to me in an international level competition.

Asked question is from Flow Rate topic in section Moles, Density & Concentration of Basic Chemical Engineering

Answer 1

The correct choice is (a) 0.25

For explanation: Applying reaction equilibrium equation, 1*0.25 = n*1, => n = 0.25.