pBlock ElementsII 2 Question 14
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14. When $\mathrm{I}^{-}$is oxidised by $\mathrm{KMnO}_{4}$ in alkaline medium, $\mathrm{I}^{-}$ converts into
======= ####14. When $\mathrm{I}^{-}$is oxidised by $\mathrm{KMnO}_{4}$ in alkaline medium, $\mathrm{I}^{-}$ converts into
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) $\mathrm{IO}_{3}^{-}$
(b) $\mathrm{I}_{2}$
(c) $\mathrm{IO}_{4}^{-}$
(d) $\mathrm{IO}^{-}$
(2004, 1M)
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Solution:
- $\mathrm{I}^{-}$is oxidised by $\mathrm{MnO}{4}^{-}$in alkaline medium to form $\mathrm{IO}{3}^{-}$ $2 \mathrm{KMnO}{4}+\mathrm{KI}+\mathrm{H}{2} \mathrm{O} \longrightarrow 2 \mathrm{KOH}+2 \mathrm{MnO}{2}+\mathrm{KIO}{3}$
