Which of the following reagents is used in the Hell-Volhard-Zelinsky reaction?
In the Hell-Volhard-Zelinsky reaction, carboxylic acids with α-hydrogens react with bromine in the presence of red phosphorus to form α-bromo carboxylic acids.
Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.