What age decomposition reaction explain with example
The generalised rection for decomposition is ; AB ---> A + B
For ex: 2H2O ---> 2H2 + O2
Types:- The decomposition reaction can be classified into three main types as follows;
For Ex:- Calcium carbonate (lime stone) CaCO3 is decomposed by heating.
CaCO3 ---> CaO + CO2
2. Electrolytic decomposition (Electrolysis) reaction: When an electric current is passed through an aqueous solution of a simple compound, it breaks in two or more parts and the process is called electrolysis.
For Ex:- decomposition of water
2H2O ---> 2H2 + O2
3. Photodecomposition (Photolysis) reaction: It is a simple decomposition reaction in which, a substance is broken down into smaller parts by the supply of light energy.
For ex:- Decomposition of silver chloride AgCl; when AgCl is placed in a watch glass and exposed to sunlight, its white colour changes to grey which conforms decomposition as;
2AgCl (white solid) ---> 2Ag (grey solid) + Cl2(gas)