Question

Which of the following species, do not show disproportionation reaction and why ?

ClO^– , ClO₂ ^– , ClO₃ ^– and ClO₄ ^– .

Also write reaction for each of the species that disproportionates.

Answer 1

Among the Oxoanions of chlorine listed above, ClO₄ ^– does not dis proportionate because in this Oxo anion chlorine is present in its highest oxidation state that is, +7. 

The disproportionation reactions for the other three Oxo anions of chlorine are as follows: 

3ClO^– 2Cl^– --------->ClO^– ₃ 

6 ClO2^– -----------> 4ClO3^– + 2Cl^– 

4ClO^– ₃ ---------> Cl^– + 3 ClO₄ ^-