Question

(3 MARKS)
14. Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the
reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light
and electricity.

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Answer 1

Heat ----

CaCo3 ------- CaO + Co2

Light ------

AgCl ---- Ag + cl2

electricity ------

Nacl ------ Na + cl2