When KMnO_4 solution is added to hot oxalic a | vedclass

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Question

(A) The reaction between $KMnO_4$ and oxalic acid $(H_2C_2O_4)$ in an acidic medium produces $Mn^{2+}$ ions. Initially,the concentration of $Mn^{2+}$

Vedclass · Accepted Answer

$Mn^{2+}$ acts as an autocatalyst

Vedclass · Answer

(A) The reaction between $KMnO_4$ and oxalic acid $(H_2C_2O_4)$ in an acidic medium produces $Mn^{2+}$ ions. Initially,the concentration of $Mn^{2+}$ is very low,making the reaction slow. As the reaction proceeds,$Mn^{2+}$ ions are produced,which act as an autocatalyst for the reaction. This autocatalytic effect significantly increases the rate of reaction,making the decolorization instantaneous after some time.

Column-$I$	Column-$II$
$A. V_2O_5$	$i. \text{Conversion of } SO_2 \text{ to } SO_3$
$B. Ni$	$ii. \text{Hydrogenation of oils}$
$C. MnO_2$	$iii. \text{Preparation of } O_2 \text{ from } KClO_3$
$D. Fe$	$iv. \text{Haber's process}$

When $KMnO_4$ solution is added to hot oxalic acid solution,the decolorization is slow in the beginning but becomes instantaneous after some time. This is because

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