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Explain why does the colour of KMnO_(4) disappear when oxalic acid is added to its solution in acidic medium. |
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Answer» Solution :`KMnO_(4)` acts as oxidising agent. It oxidises oxalic ACID to `CO_(2)` and is itself changed to `Mn^(2+)` IONS which are colourless. The reaction is given as under : `5C_(2)O_(4)^(2-)+underset(("COLOURED"))(2MnO_(4)^(-))+16H^(+)to underset(("Colourless"))(2Mn^(2+))+8H_(2)O+10CO_(2)` |
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