Amount of oxalic acid present in a solution can be determined by its titration with `KMnO_(4)` solution in presence of `H_(2)SO_(4)` but not in presence of HCI ? Explain why ?

Explanation

Both oxalic acid and HCI reduce `MbnO_(4)^(-) to Mn^(2+)`
`2MnO_(4)^(-)+5C_(2)O_(4)^(2-)+16H^(+)rarr2Mn^(2+)+10CO_(2)+8H_(2)O`
`2MnO_(4)^(-)+16 H^(+)+10CI^(-)rarr2Mn^(2+)+8H_(2)O+8H_(2)O+_5CI_(2)` ltbRgt As a result titration does not give us the exact amount of oxalic acid present in the solution