1.

When an acid solution of oxalic acid at 80^(@)C is titrated with KMnO_(4) solution, the first few drops of KMnO_(4) are decoloured slowly but decolourisation occurs fast later. This is because

Answer»

Of increases in the concentration of `CO_(2)` formed
Oneof the products `Mn^(+2)` ACTS as auto catalyst
Both `Mn^(+2)` and `K^(+)` IONS act auto catalyst
`KMnO_(4)` catalyses the reaction at the later STAGES

Answer :B


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