Which reagent confirms the presence of a phenolic -OH group in a compound?
Neutral FeCl₃ forms a violet complex with phenols due to coordination with the phenoxide ion, distinguishing them from alcohols.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
