Question

4. Explain decomposition reaction and their types with example
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Answer 1

Answer:

Decomposition reaction is a chemical reaction in which one reactant breaks down to form two or more products. The general format of a decomposition reaction : AB -> A + B

Types of decomposition reactions :

Thermal decomposition reaction  : A chemical reaction where a single substance breaks into two or more simple substances when heated is called a thermal decomposition reaction.

example: CaCO3 → CaO + CO2

Electrolytic decomposition reaction : An electrolytic decomposition reaction is a type of decomposition reaction in which the activation energy for decomposition is provided in the form of electrical energy.

example : 2H2O→ 2H2 + O2

Photo decomposition : Photo decomposition is a chemical reaction in which a substance is broken down into simple substances by exposure to light

example : 2AgCl → 2Ag + Cl2

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