Propanoic acid is warmed with $Br X_{2}$ and a little red phosphorus, and the mixture is then treated with water. The main product is

Apropanoyl bromide
B2-bromopropanoic acid
C3-bromopropanoic acid
D1-bromopropane

Answer: B

This is the Hell-Volhard-Zelinsky reaction: the acid bromide enolises and brominates at the alpha carbon, and water converts the acyl bromide back to the acid. The product is

CH X_{3} CHBrCOOH

, 2-bromopropanoic acid.

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Propanoic acid is warmed with BrX2​ and a little red phosphorus, and the mixture is then treated with water. The main product is

Answer: B

More questions on Carboxylic acids: acidity, preparation, derivatives, HVZ reaction

Propanoic acid is warmed with $Br X_{2}$ and a little red phosphorus, and the mixture is then treated with water. The main product is