Question

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

Answer 1

heat--caco3--cao+co2
light--agcl--ag+ cl2
electricity--h2o--h2+o2

Answer 2

Explanation:

When a single reactant breaks to produce two or more products, known as decomposition reaction.

During decomposition of a reactant, the reactant need energy to break the reactants to produce products. The energy can be in light or heat or electricity energy.

If the Decomposition reaction require heat energy, then it is called as thermal decomposition reaction.

For example:

$\mathrm{CaCO}_{3} \stackrel{\text {Heat}}{\longrightarrow} \mathrm{CaO}(s)+\mathrm{C} \mathrm{O}_{2}(g)$

If the Decomposition reaction require energy in the light form is known as reaction of photochemical decomposition.

For example:

$2 A g C l(s) \stackrel{\text { sun light }}{\longrightarrow} 2 A g(s)+C l_{2}(g)$

If the Decomposition reaction require energy in the form of electricity is known as electrolytic decomposition reaction.

For example:

$2 H_{2} O(l) \rightarrow 2 H_{2}(g)+O_{2}(g)$