Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

HVZ reaction is given by only those carboxylic acids which have$\mathrm{\alpha }$-H-atom.$\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}$has three$\mathrm{\alpha }$-H-atoms but formic acid does not have$\mathrm{\alpha }$-H-atom hence formic acid cannot be halogenated.
For e.g.${\text{CH}}_{\text{3}}\text{COOH}\text{+}{\text{Cl}}_{\text{2}}\underset{{\text{P}}_{\text{4}}}{\overset{\text{Δ}}{\to }}{\text{ClCH}}_{\text{2}}\text{COOH}\text{+}\text{HCl}$