In this video we have discussed following question
Decomposition Reaction
Types of decomposition reaction

The reaction in which a compound splits
into two or more simple substances is called decomposition reaction.
A → B + C
• Thermal decomposition : When decomposition is carried out by
heating.
e.g., (i) 2FeSO4 (s) HeatFe2O3 (s) + SO2 (g) + SO3 (g)


(ii) CaCO3 (s) → CaO (s) + CO2 (g)
(Lime stone) (Quick lime)


• Electrolytic Decomposition : When decomposition is carried out by
passing electricity.
e.g., 2H2O Electriccurrent → 2H2 + O2

Photolytic Decomposition : When decomposition is carried out in presence of sunlight.
2AgCl (s) Sunlight → 2Ag (s) + Cl2 (g)
2AgBr (s) Sunlight → 2Ag (s) + Br2 (g)

​

​

​

​

​

​

​

​

​

​