Question

Decomposition reaction require energy either in the form of heat or light or electricity for breaking down the reactants.write one equation each for decomposition reaction where energy is supplied in the form of heat,light and electricity

Answer 1

1. CaCo3 (s) -----> Cao (s) + Co2 (g) {heat energy}

2. 2AgCl (s) -----> 2Ag (s) + Cl2 (g) {Light energy}

3. 2H2 (l) ------> 2H2 (g) + O2 (g) {Electricity}

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Answer 2

Photolysis

Ag + Cl2 ------->AgCl

Thermal decomposition

FeSO4 -------> Fe2O3 + SO2 + SO3

Electrolysis

H20 ----------> H2 + O2