MCQ
In weak alkaline medium iodide is changed in following compound by $KMnO_4$
- A$I_2$
- B$KI$
- C$IO^{-}_{2}$
- ✓$IO^{-}_{3}$
✓
Answer
Correct option: D.
$IO^{-}_{3}$
d
$2 KMnO _4+ H _2 O + KI \rightarrow 2 MnO _2+2 KOH + KIO _3$
$2 KMnO _4+ H _2 O + KI \rightarrow 2 MnO _2+2 KOH + KIO _3$
$I +6 OH ^{-} \rightarrow IO _3^{-}+3 H _2 O +6 e ^{-}$
When alkaline $KMnO 4$ is treated with $KI ^{-}{ }^{}$is oxidised to $IO _3{ }^{-}$.
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