In the titration between oxalic acid and acid | vedclass

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(C) The reaction between oxalic acid $(H_2C_2O_4)$ and acidified potassium permanganate $(KMnO_4)$ is slow at room temperature. As the reaction procee

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$C$. An autocatalyst

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(C) The reaction between oxalic acid $(H_2C_2O_4)$ and acidified potassium permanganate $(KMnO_4)$ is slow at room temperature. As the reaction proceeds,$Mn^{2+}$ ions are produced. These $Mn^{2+}$ ions act as a catalyst for the reaction,increasing its rate. Since the product of the reaction itself acts as a catalyst,this phenomenon is known as autocatalysis,and the substance is called an autocatalyst.

Column-$I$ Catalyst	Column-$II$ Product
$(a)$ $V_2O_5$	$(i)$ Polyethylene
$(b)$ $TiCl_4/Al(Me)_3$	$(ii)$ Ethanal
$(c)$ $PdCl_2$	$(iii)$ $H_2SO_4$
$(d)$ Iron oxide	$(iv)$ $NH_3$

In the titration between oxalic acid and acidified potassium permanganate,the manganous salt formed catalyses the reaction. The manganous salt is

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