What is meant by 'disproportionation'? Give two examples of disproportionation reaction in aqueous solution.

Explanation

The disproportionation reactions are those in which the same substance gets oxidised as well as reduced. For example,
`(i) 3Cr^V O_4^(3-) + 8H^(+) to 2Cr^(VI) O_4^(2-) + overset(III)(Cr^(3+)) + 4H_2O`
`(ii) 3Mn^(VI) O_4^(2-) + 4H^(+)to 2Mn^(VII)O_4^(-) + Mn^(IV)O_2 + 2H_2O`