Question

Ice having CP = 15 J/^oC, is heated from -10^oC to -4^oC, what is the enthalpy change?

(a) 30 J

(b) 60 J

(c) 90 J

(d) 120 J

This question was posed to me in unit test.

The doubt is 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 option is (c) 90 J

The best I can explain: ∆H = -10∫^-415.dT = 15*6 = 90 J.