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 is given by: $2MnO_4^- + 5H_2C_2O_4 + 6H^+ \rightarrow 2Mn^{2+} +

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$Mn^{2+}$ acts as autocatalyst

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(A) The reaction between $KMnO_4$ and oxalic acid $(H_2C_2O_4)$ in an acidic medium is given by: $2MnO_4^- + 5H_2C_2O_4 + 6H^+ \rightarrow 2Mn^{2+} + 10CO_2 + 8H_2O$. In this reaction,$Mn^{2+}$ ions are produced as a product. These $Mn^{2+}$ ions act as an autocatalyst,meaning they increase the rate of the reaction as their concentration increases. Initially,the concentration of $Mn^{2+}$ is very low,so the reaction is slow. As the reaction proceeds,more $Mn^{2+}$ is formed,which accelerates the reaction,making the decolourisation instantaneous.

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

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