Heat of formations of A, B, C, and D, are 5 J, 10 J, 15 J, and 20 J respectively, what is the heat of reaction A + 4B -> 3C + D?
(a) 10 J
(b) 20 J
(c) 35 J
(d) 45 J
I have been asked this question in final exam.
Question is taken from Standard Heat (Enthalpy) of Formation in chapter Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering