Give an example for thermal decomposition and photochemical decomposition reactions. Write the relevant balanced chemical equation.

Give an example for thermal decomposition and photochemical decomposit

1.	Give an example for thermal decomposition and photochemical decomposition reactions. Write the relevant balanced chemical equation.
Answer» Solution :Thermal decomposition - On HEATING potassium chlorate using MANGANESE dioxide as catalyst, it decomposes into potassium chloride and oxygen. `underset((s))(2KClO_(3))underset(MnO_(2))overset("light")(to)underset((s))(2KCl)+underset((s))(3O_(2))uarr` Photochemical decomposition - When WHITE coloured silver chloride is exposed to sunlight, it turns grey and decomposes to FORM metallic silver and CHLORINE gas. `2AgCl(s)overset("sunlight")(to)2Ag(s)+Cl_(2)(g)`