Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.
(a) Thermal decomposition reaction (Thermolysis)
Decomposition of potassium chlorate: When heated strongly, potassium chlorate decomposes into potassium chloride and oxygen. This reaction is used for the preparation of oxygen.
(b) Electrolytic decomposition reaction (Electrolysis)
Decomposition of sodium chloride: On passing electricity through molten sodium chloride, it decomposes into sodium and chlorine.
(c) Photodecomposition reaction (Photolysis)
Decomposition of hydrogen peroxide: In the presence of light, hydrogen peroxide decomposes into water and oxygen
(a) Decomposition reaction where energy is supplied in the form of heat:
CaCO3 (s) → CaO (s) + CO2 (g)
(b) Decomposition reaction where energy is supplied in the form of light:
2AgCl (s) → 2Ag (s) + Cl2 (g)
(c) Decomposition reaction where energy is supplied in the form of electricity:
2H2O (l) → 2H2 (g) + O2 (g)