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To an acidic solution of an anion, a few...

To an acidic solution of an anion, a few drops of `Kmno_(4)` solution are added. Which of the following, if present, will not decolourise the `KMnO_(4)` solution?

A

`CO_(3)^(2-)`

B

`NO_(2)^(ө)`

C

`S^(2-)`

D

`Cl^(ө)`

Text Solution

Verified by Experts

The correct Answer is:
A
Oxidation state of `C` in `CO_(3)^(2-)` is `+4`, which is maximum.
So, it will not be oxidised.
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  7. Which of the following is a disproporationation reaction ?

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