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Oxidation of Alkynes
Ethyne is oxidised by a dilute aqueous solution of potassium permanganate to form oxalic acid. Thus, if ethyne is bubbled through a solution of potassium permanganate the solution is decolourised. This is Baeyer's test for unsaturated organic compounds.



KMnO4

HCCH ==> O = COH
1
Ethyne O = COH

Oxalic Acid

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