Heat of reaction or heat of reaction can be divided into:

1. Heat of formation: Heat reactions accompanying the formation of 1 mole of a compound directly from its elements

2. Thermal decomposition: Thermal decomposition of moles accompanying the compound into its elements

3. Heat of combustion: heat the combustion reaction in 1 mol of substance

4. Thermal dilution: The number of heat that arises in a mole of substance dissolving in a solvent whose numbers so much, so the addition of solvents did not cause thermal effects that can be measured

5. Neutralization Heat: Heat is liberated in the reaction between H + and OH-ions to form water molecules.