Question

Heat Capacity of water is given by 4 + T^2, what is the enthalpy change from 0^oC to 3^oC?

(a) 7 J

(b) 14 J

(c) 21 J

(d) 32 J

This question was posed to me in examination.

I'd like to ask this question from Heat Capacity Equations in division Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

Answer 1

The correct choice is (c) 21 J

The explanation: ∆H = 0∫^3 (4 + T^2).dT = 4*3 + 33/3 = 21 J.