What is meant by 'disproportionation' ? Give an example of disproportionation reaction in aqueous solution.

Explanation

The reactions in which only one element undergo both oxidation as well as reduction are called disproportion reactions.
`rarr` When a particular oxidation state becomes less stable relative to other oxidation states, one lower, one higher, it is said to undergo disproportionation.
Eg : `Cu^(+)` ion is not stable in aqueous solution because it undergo disproportionation in aqueous solution.
`2Cu_((aq))^(+)rarrCu_((aq))^(+2)+Cu_((g))`