Which amine cannot form a salt with C₆H₅SO₂Cl in the Hinsberg test?
Tertiary amines like (CH₃CH₂)₃N lack an N-H bond and do not react with C₆H₅SO₂Cl to form a sulphonamide salt, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions