Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electrictiy

Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for

Question: Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electrictiy. [CBSE, 2018]

Answer: Decomposition of zinc carbonate, when heat is applied. 

ZnCO + Heat  →  ZnO + CO

Decomposition of water in presence of electricity:

2HO + Electricity  → 2H + O(g)

Decomposition of silver chloride in presence of light:

2AgCl + Sunlight  → 2Ag + Cl White Grey


Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electrictiy