KMnO4 acts as an oxidising agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidised to ____________.
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- $\text{IO}_3^-$
Iodide ion neutral of faintly alkaline solutions converts iodide to iodate:
$2\text{MnO}_4^-+\text{H}_2\text{O}+\text{I}^-\rightarrow2\text{MnO}_2+2\text{OH}^-+\text{IO}_3^-$
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