Question

what does one mean by exothermic and endothermic? reaction give examples. ​

Answer 1

Answer:

• The chemical reaction in which heat is released is called exothermic reaction.
• The chemical reaction in which heat is absorbed is called endothermic reaction.

Explanation:

EXAMPLE OF EXOTHERMIC:

• C + O2 -------> CO2 + heat

EXAMPLE OF ENDOTHERMIC:

• CaCO3 ⟶ CaO + CO2 - heat

Answer 2

1) Exothermic reactions - Those reactions in which heat is evolved .

♥ Examples :-

(i) C (s) + O2 (g) → CO2 (g) + Heat

(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + Heat

2) Endothermic reactions - Those reactions in which heat is absorbed .

♥ Examples :-

(i) C (s) + 2S (s) → CS2 (l) – Heat

(ii) N2 (g) + O2 (g) → 2NO(g) – Heat