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Why in the redox titration of KMnO(4) vs...

Why in the redox titration of `KMnO_(4)` vs oxalic acid, we heat oxalic acid solution before starting the titration?

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The reaction is very slow at room temperature. By raising the temperature, the reaction rate increases. Normally in the reaction, `KMnO_(4)` acidified with dilute `H_(2)SO_(4)` reacts with oxalic acid at a temperature of about `50^(@)`C.
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