Is a Combustion Reaction Endothermic or Exothermic?
Answer – Combustion reactions are exothermic.
Explanation:
When endothermic reactions take place, heat is absorbed by the reactants from their immediate surroundings to fuel the process. This results in a drop in the temperature of their environment.
Exothermic reactions, on the other hand, release energy into their surroundings, primarily in the form of heat and light. Temperatures in the vicinity of such reactions rise.
In combustion reactions, a substance is oxidized (i.e. reacts with gaseous oxygen, O2), accompanied by the release of energy, often in the form of heat and light. Thus, these reactions are exothermic.
