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| 1. |
Explain why does colour of KMnO_(4) disappear when oxalic acid is added to its solution in acidic medium. |
| Answer» Solution :`KMnO_(4)` being STRONG oxidizing agent in acidic medium, oxidizes OXALIC acid to `CO_(2)` and itself GETS reduces to `Mn^(2+)` ions which is colourless. `5C_(2)O_(4)^(2-) + 2MnO_(4)^(-) + 16H^(+) rarr UNDERSET(("Colourless"))(2Mn^(2+)) + 10CO_(2) + 8H_(2)O` | |