Oxalic acid is oxidised by a acidified `KMnO_(4)` as follows:
`2MnO_(4)^(-)+16H^(+)+5C_(2)O_(4)^(2-)to2Mn^(2+)+10CO_(2)+8H_(2)O`
The rate of this reaction increases with time because

Options

A. `CO_(2)` formed escapes
B. of presnece of sulphuric acid `[H^(+)]`
C. of formation of ` Mn^(2+)` which acts as an auto catalyst
D. `KMnO_(4)` is a string oxidising agent

Answer

C

Explanation

`Mn^(2+)` acts as self catalyst.