Question

Two feeds, 10 mole with 5 J/mole and 20 mole with 15 J/mole, product contains two streams, 5 mole with 10 J/mole and P with 25 J/mole, what is the value of P?

(a) 10 mole

(b) 12 mole

(c) 15 mole

(d) 18 mole

This question was addressed to me during an interview.

Asked question is from Solving Energy Balance Problems topic in section Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering

Answer 1

Correct choice is (b) 12 mole

To explain: 10*5 + 20*15 = 5*10 + P*25, => P = 12 mole.