Chemistry · 2013
JEE Main · 9 April 2013, Shift 1 · Q38
The instantaneous rate of disappearance of MnO_4^- ion in the following reaction is 4.56 × 10^-3 Ms^-1; 2 MnO_4^-+10 I^-+16 H^+ → 2 Mn^2++ 5 I_2+8…
The instantaneous rate of disappearance of $\displaystyle \mathrm{MnO}_4{ }^{-}$ion in the following reaction is
$$\begin{aligned}
& 4.56 \times 10^{-3} \mathrm{Ms}^{-1} \\
& 2 \mathrm{MnO}_4^{-}+10 \mathrm{I}^{-}+16 \mathrm{H}^{+} \rightarrow 2 \mathrm{Mn}^{2+}+ \\
& 5 \mathrm{I}_2+8 \mathrm{H}_2 \mathrm{O}
\end{aligned}
$$
The rate of appearance $\displaystyle \mathrm{I}_2$ is :
Official answer
(2)
$\displaystyle 1.14 \times 10^{-2} \mathrm{Ms}^{-1}$
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