What is Heat of Combustion?

At a particular temperature and 1 atm pressure, 1 gm-mole of substance completely burn with O2. From this reaction heat is evolve that heat is known as heat of combustion of that substance.

Importance of combustion heat:

  1. We can determine reaction enthalpy and formation enthalpy by using heat of combustion.
  2. To deter mine the formation of compound
  3. To determine the calorie of food and fuel.