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.

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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