Q25 / 110 · VITEEE 2023 · Chemistry

Which of the following will not give \(\mathrm{HVZ}\) reaction?

  • Correct answer
    A
    Trichloroethanoic acid
  • B
    2-methyl butanoic acid
  • C
    Ethanoic acid
  • D
    Propanoic acid

Solution

In H.V.Z reaction, in presence of small amount of phosphorus, aliphatic carboxylic acids containing \(\alpha\)-hydrogen atom reacts with \(\mathrm{Cl}_2, \mathrm{Br}_2\) to yield an acid halide in which \(\alpha\)-hydrogen has been replaced by halogen. So, trichloroethanoic acid, among the given options which do not contains \(\alpha\)-hydrogen atom, will not give \(\mathrm{HVZ}\) reaction.

Hence, the correct answer is option: 'A'.

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