Ncert Exercises & Solutions

Explain why does colour of $K M n O_{4}$ disappear when oxalic acid is added to its solution in acidic medium?

NEETprep Answer: When oxalic acid is added to acidic solution of . Its colour disappear due to reduction of . Chemical reaction occuring during this neutralisation reaction is as follows

5 C_{2} O_{4}^{2 -} + 2 M n O_{4}^{-} + 16 H^{+} \to 2 M n^{2 +} + 8 H_{2} O + 10 C O_{2}

(C o l o u r e d) (C o l o u r l e s s)

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