Question

write one equation each for decomposition reaction in which energy is supplied in the form of heat light or electricity definition​

Answer 1

Decomposition reaction requiring heat is known as thermal decomposition , CaCO3--------->CaO + CO2. Decomposition reaction requiring light is known as photo chemical decomposition reaction , 2AgCl-------2Ag + Cl2.

Answer 2

Answer:

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Explanation:

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

              heat

CaCO  3  ⟶  CaO+CO  2

Photo decomposition is a chemical reaction in which a substance is broken down into simple substances by exposure to light (photons).

                 sunlight

2H 2 O2        ⟶         2H  2 O+O2

​Electrolytic decomposition may result when the electric current is passed through an aqueous solution of a compound.  

               electricity

2H2 O(l)         ⟶        2H2 (g)+O2 (g)