Question

The reaction, $3Cl{O}^{-}(aq.)\to Cl{O}_3^{-}(aq.)+2C{l}^{-}(aq.)$ is an example of :

• A. Oxidation reaction
• B. Reduction reaction
• C. Disproportionation reaction
• D. Decomposition reaction

Answer 1

The correct option is C Disproportionation reaction

Here $Cl{O}^{-}$ is disproportionated into 2 species $Cl{O}_3^{-}$ and $C{l}^{-}$. As oxidation state of $Cl$ changes from $+1$ to $-1$ and $+5$.
$3\stackrel{+1}{C}l{O}^{-}(aq.)\to \stackrel{+5}{C}l{O}_3^{-}(aq.)+2\stackrel{-1}{C}{l}^{-}\left(aq\right)$