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Formic acid does not undergo HVZ reaction because it does not have ____________ . |
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Answer» Formic Acid does not undergo this reaction because it does not contain alkyl group. Hell-Volhard ZELINSKY Reaction Takes place only when α-hydrogen is presents.Formic acid formula,HCOOH IUPAC Name - Methanoic acid There is no alkyl group (-CH₃)So there is no α-hydrogen in itChlorination, Bromination will only take place at the α-POSITION.But HVZ reaction requires α-hydrogen for the reaction which substitutes a Halide(Cl,Br) in place of a hydrogen.Hell-Volhard Zelinsky Reaction: (HVZ reaction)Carboxylic acid having an α-hydrogen are halogenated at α position on treatment with Chlorine, BROMINE in presence of small amount RED-phosphorous to give α-halocarboxylicacid acids. R-CH₂-COOH +(red phosphorus/X₂) ⇒ R-CH(X)-COOH (X = Cl, Br)Therefore, Finally Formic Acid does not undergo this reaction because it does not contain alkyl group. |
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