Consider the following chemical reaction MnO_4^-(aq)+I^-(aq) MnO_… - Vidyadip

MCQ

Consider the following chemical reaction $\text{MnO}_4^-\text{(aq)}+\text{I}^-\text{(aq)}\xrightarrow{\ \ \ \ \ \ \ }\text{MnO}_2\text{(s)}+\text{I}_2\text{(s)}$ Which of the following reactions is an oxidation half $-$ reaction?

A
$\text{MnO}_4^- \text{(aq)}\xrightarrow{\ \ \ \ \ \ \ \ \ \ } \text{MnO}_2\text{(s) }$
✓
$\mathrm{I}^{-}(\mathrm{aq}) \rightarrow \mathrm{I}_2(\mathrm{~s})$.
C
Both $(a)$ and $(b).$
D
None of the above.

✓

Answer

Correct option: B.

$\mathrm{I}^{-}(\mathrm{aq}) \rightarrow \mathrm{I}_2(\mathrm{~s})$.

$\text{MnO}^-_4\text{(aq)}+\text{I}^-\text{(aq)}\xrightarrow{\ \ \ \ \ \ \ }\text{MnO}_2+\text{I}_2\text{(s)}$
Oxidation half reaction : $\text{I}^-\text{(aq)}\text{}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ }\text{I}_2\text{(s)}$
Reduction half reaction : $\text{MnO}^-_4\text{(aq)}\xrightarrow{\ \ \ \ \ \ \ }\text{MnO}_2\text{(s)}$

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