In the oxidation of oxalic acid by KMnO_4,the | vedclass

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(A) The reaction between oxalic acid $(H_2C_2O_4)$ and potassium permanganate $(KMnO_4)$ in an acidic medium is given by: $2MnO_4^- + 5H_2C_2O_4 + 6H^

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Autocatalysis

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(A) The reaction between oxalic acid $(H_2C_2O_4)$ and potassium permanganate $(KMnO_4)$ 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 for the reaction,which increases the rate of the reaction as the concentration of $Mn^{2+}$ increases. Therefore,the reaction proceeds slowly at the start and becomes very rapid once some $Mn^{2+}$ is formed. This phenomenon is known as autocatalysis.

In the oxidation of oxalic acid by $KMnO_4$,the color of $KMnO_4$ disappears slowly at the beginning of the reaction,but then it disappears very rapidly. This is an example of .......

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