Question

In a chemical reaction, what is defined as the difference between the potential energy of the products and the potential energy of the reactants?
A) activation energy
B) ionization energy
C) enthalpy
D) heat of vaporization

Answer 1

The difference between these two potential energies is the heat lost (if reactants > products) or gained (if products > reactants) as a result of the reaction

This is the definition of enthalpy!