Question

Define the term decomposition reaction. Give one example each of thermal decomposition and electrolytic decomposition.

Answer 1

Dear Student.

Decomposition reaction : A reaction in which a complex reactant is converted into two or more simple molecule, then the reaction is called as decomposition reaction.

In other words, decomposition reaction is separation of a substance into two or more simple substances which have different properties from each other and that of the original substance.

Ex: AB -> A + B

Thermal decomposition

In chemical reaction, decomposition of calcium carbonate on heating produces calcium oxide and carbon dioxide gas which are different in nature,

CaCO₃ -> CaO + CO₂

2.Electrolytic decomposition-
2H₂O --------> 2H_​2+O₂