Question

what is meant by endothermic and exothermic reaction? give examples..​

Answer 1

Reaction in which heat energy is liberated by the reactants is called exothermic reaction.

  eg:   Carbon + Oxygen gives  Carbon Dioxide + Q

reaction in which heat energy is absorbed by the reactants is called endothermic reaction.

eg:  Nitrogen + Oxygen gives 2 nitrous oxide (2NO)  -  Q

Answer 2

Hello Dost ☺

Answer :

Exothermic reaction and endothermic reaction:

On the basis of energy changes during chemical reaction, they can be classified as

i) Exothermic reaction: A chemical reaction in which heat energy is produced.

Eg : C + O2 → CO2 (g) + heat

ii) Endothermic reaction: A chemical reaction in which heat energy is absorbed.

Eg : CaCO3 + Heat → CaO + CO2

Thanks ☺