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InterviewSolution
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Amount of oxalic acid present in a solution can be determined by its titration with `KMnO_(4)` solution in the presence of `H_(2)SO_(4)`. The titration gives unsatisfactory result when carried out in the presence of HCl because HCl:A. (a)gets oxidized by oxalic acid to chlorineB. (b)Furnishes `H^(+)` ions in addition to those from oxalic acidC. (c )Reduces permanganate to `Mn^(2+)`D. (d)Oxidises oxalic acid to carbon dioxide and water |
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Answer» Correct Answer - C 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+)` |
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