1.

When KMnO_(4) solution is added to oxalic acid solution, the decolourization is slow in the beginning but becomes instantaneous after some time because….

Answer»

`CO_(2)` is FORMED as the product
Reaction is EXOTHERMIC
`MnO_(4)^(-)` catalyses the reaction
`Mn^(2+)` acts as autocatalyst

Solution :`Mn^(2+)` formed during the reaction ACT as auto CATALYST


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