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

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Answer 2

Explanation:

Decomposition reaction is the reaction in which a single reactant decomposes to produce either two or more products.

For example,  $AB \rightarrow A + B$ is a decomposition reaction.

One equation each for decomposition reaction is as follows.

•  $2KClO_{3} \overset{heat}{\rightarrow}2KCl +3O_{2}$

In this reaction, energy is supplied in the form of heat, that is why $2KClO_{3}$ decomposes into potassium chloride and oxygen.

• $2AgCl \overset{h\nu }{\rightarrow}2Ag +Cl_{2}$

In this reaction, AgCl decomposes in the presence of sunlight to give silver and chlorine.

• $2H_{2}O \overset{electricity}{\rightarrow}2H_{2} +O_{2}$

In this reaction, water decomposes in the presence of electricity to give hydrogen and oxygen.