Question

Write a equation for each for decomposition reaction when energy supplied in forms of 1. heat and 2. Light

Answer 1

1. Heat

2FeSO4. ---------> Fe2O3 + SO2 + SO3

2.Light

2AgBr. ---------> Ag + Br2

Answer 2

Hi !

Decomposition reaction is a chemical reaction in which a single substances breaks down into two or more simpler substances.

i) Decomposition reaction due to Heat - Thermal decomposition :-
            
                   heat
1) CaCO₃  ----------> CaO + O₂

                     heat
2) KClO₃   -------------> KCl + O₂

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ii) Light 
          
              sunlight
1) AgCl --------------> Ag + Cl₂

                sunlight
2) AgBr  ----------------> Ag + Br₂