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Which one of two , ClO(2)^(-) or ClO(4)...

Which one of two , `ClO_(2)^(-) ` or `ClO_(4)^(-)` shows disproportionation reaction and why ?

Text Solution

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The oxidation state of Cl in `ClP_2^(-)` is +3 and in `ClO_4^(-)` , it is +7. So , chlorine is present in highest oxidation state of +7 in `ClO_4^(-)` and it cannot increase its oxidation state. Hence `ClO_4^(-) ` does not disproportionates.
The disproportionate reaction of `ClO_2^(-)` is
`overset(+3)(3ClO)_2^(-)rarroverset(-1)(Cl^(-))+overset(+5)(2Cl)O_3^(-)`
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