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  • {KMnO}_{4} acts as an oxidising agent in alkaline medium. When alkaline {KMnO}_{4} is treated with {KI}, iodide ion is oxidised to ____________. (i) {I}_{2} (ii) {IO}^{-} (iii){IO}^{3-} (iv) {IO}_{4}^{-}

\text {KMnO}_{4} acts as an oxidising agent in alkaline medium. When alkaline \text {KMnO}_{4} is treated with \text {KI}, iodide ion is oxidised to ____________.

(i) \text {I}_{2}

(ii) \text {IO}^{-}

(iii) \text {IO}^{3-}

(iv) \text {IO}_{4}^{-}

Answers (1)

The answer is the option (iii). On treating alkaline \text {KMnO}_{4} with \text {KI}, we get

\text {2KMnO}_{4}+\text {KI}+\text {H}_{2}\text {O}\rightarrow\text {2KOH}+\text {2MnO}_{2}+\text {KIO}_{3}

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