Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity

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Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Answer:
CaCO3 (s) ⇨ CaO (s) + CO2 (g)
In this reaction energy is supplied in the form of heat.
2AgCl (s) + sunlight ⇨ 2Ag (s) + Cl2 (g)
In this reaction energy is supplied in the form of light,i.e.sunlight
2H2O (l) + electricity ⇨ 2H2 + O2
In this reaction energy is supplied in the form of electricity.

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