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  4. Amount of oxalic acid present in a solution can be determined by its titration with KMnO4 solution in the presence of H2SO4. The titration gives unsatisfactory result when carried out in the presence of HCl because HCl

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Q. Amount of oxalic acid present in a solution can be determined by its titration with $KMnO_4$ solution in the presence of $H_2SO_4$. The titration gives unsatisfactory result when carried out in the presence of $HCl$ because $HCl$

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Solution:

Titration of oxalic acid by $KMnO_4$ in the presence of $HCl$ gives unsatisfactory result because $HCl$ is a better reducing agent than oxalic acid and $HCl$ reduces preferably $MnO_4$ to $Mn^{2+}$