Question

A mixture contains 20% of A with Heat Capacity 25 J/^oC, 30% of B with Heat Capacity 20 J/^oC, and 50% of C with Heat Capacity 10 J/^oC, what is the Heat Capacity of mixture?

(a) 10 J/^oC

(b) 14 J/^oC

(c) 16 J/^oC

(d) 20 J/^oC

I got this question by my school teacher while I was bunking the class.

My question is from Heat of Solution, Dissolution and Mixing in division Energy Balances that Include the Effects of Chemical Reaction, Ideal Processes, Efficiency and the Mechanical Energy Balance and Heats of Solution and Mixing of Basic Chemical Engineering

Answer 1

Correct choice is (c) 16 J/^oC

The best explanation: Heat capacity of mixture = 0.2*25 + 0.3*20 + 0.5*10 = 16 J/^oC.