What do you understand by exothermic reaction and endothermic reaction? Give one example of each type.

Exothermic reaction- The reaction in which heat is evolved is called exothermic reaction.


for example,


CaO + CO2→ CaCO3 ΔH=-178kJmol-1


Endothermic reaction- The reaction in which heat is absorbed is called endothermic reaction.


for example,


2NH3 → 3N2+ H2 ΔH=918kJmol-1


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