NTA Abhyas NEET2020ChemistryCarboxylic Acid DerivativesPractice
Acetic acid can be halogenated in presence of phosphorus and chlorine. Formic acid cannot be halogenated with same way because of
Options
- Apresence of α -H-atom in formic acid
- Babsence of α -H-atom in formic acid
- Cabsence of α -H-atom in C H 3 C O O H
- Dhigher acidic strength of acetic acid than formic acid
Correct answer
B. absence of α -H-atom in formic acid
Step-by-step solution
HVZ reaction is given by only those carboxylic acids which have α -H-atom. C H 3 C O O H has three α -H-atoms but formic acid does not have α -H-atom hence formic acid cannot be halogenated. For e.g. CH 3 COOH + Cl 2 → P 4 Δ ClCH 2 COOH + HCl