Question

Give one example of a decomposition reaction of a compound into two or more compounds.

Answer 1

1.Decomposition reaction- Definition

The reaction in which a single compound breaks into two or more elements or compounds in presence of heat, light, or electricity is called a decomposition reaction.

2. Example:
a. Thermal decomposition of lead nitrate
b. Reaction:

$2\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{s}\right)\to 2\mathrm{PbO}\left(\mathrm{s}\right)+4{\mathrm{NO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)$
Lead nitrate Lead oxide Nitrogen dioxide Oxygen
c. Here lead nitrate decomposes into yellow lead oxide, brown color nitrogen dioxide gas, and colorless oxygen gas.