The correct statement regarding the basicity of aryl amines is:
(1)Aryl amines are generally less basic than alkyl amines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring electron system.Correct
(2)Aryl amines are generally more basic than alkyl amines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring electron system.
(3)Aryl amines are generally more basic than alkyl amines because of aryl group.
(4)Aryl amines are generally more basic than alkyl amines, because the nitrogen atom in aryl amines is sp-hybridized.
Answer: (1)
Solution
In aniline the lone pair on nitrogen is in conjugation with the electron system of the benzene ring (resonance), so it is delocalised into the ring and is less available for donation to a proton. In alkylamines the lone pair is localised on N and
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.