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Question
\[\ce{KMnO4}\] acts as an oxidising agent in alkaline medium. When alkaline \[\ce{KMnO4}\] is treated with \[\ce{KI}\], iodide ion is oxidised to ______.
Options
\[\ce{I2}\]
\[\ce{IO^-}\]
\[\ce{IO^-3}\]
\[\ce{IO^-4}\]
Solution
\[\ce{KMnO4}\] acts as an oxidising agent in alkaline medium. When alkaline \[\ce{KMnO4}\] is treated with \[\ce{KI}\], iodide ion is oxidised to \[\ce{IO^-}\].
Explanation:
\[\ce{2KMnO4 + KI + H2O -> 2KOH + 2MnO2 + KIO3}\]
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