Question

what is decomposition reaction give two example each of decomposition taking place due to heat light and electricity

Answer 1

Decomposition reactions- A reaction in which a compound breaks down into two or more simpler substances is known as decomposition reaction.

By heat-:
1) CaCO3 --> CaO + CO2
2) 2KClO3 --> 2KCl + 3O2
By light-:
1) 2AgCl --> 2Ag + Cl2
2) 2AgBr --> 2Ag + Br2
By electricity-:
1) 2H2O -->2H2 + O2
2) 2NaCl --> 2Na + Cl2