The correct group of halide ions which can be oxidized by oxygen in acidic medium is
Select the correct option:
A
Br– only
B
Cl–, Br– and I– only
C
Br– and I– only
D
I– only
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Solution
Sol. Only I– among halides can be oxidized to Iodine by oxygen in acidic medium.
$4 \mathrm{I}^{-}(\mathrm{aq})+4 \mathrm{H}^{+}(\mathrm{aq}) \mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{I}_2(\mathrm{~g})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$
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