Question

Formic acid does not undergo HVZ reaction because it does not have ____________ .

Answer 1

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 it

Chlorination, 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.