Question:

The correct statement regarding the basicity of arylamines is:

Updated On: Apr 20, 2025
  • Arylamines are generally more basis than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring $\pi$ electron system.
  • Arylamines are generally more basic than alkylamines because of aryl group.
  • Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized
  • Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring $\pi$ electron system.
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The Correct Option is D

Solution and Explanation

The correct statement regarding the basicity of arylamines is:

Select the correct option: 

  • Option 1: Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring ππ electron system.
  • Option 2: Arylamines are generally more basic than alkylamines because of the aryl group.
  • Option 3: Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized.
  • Option 4: Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring ππ electron system.

Answer: Option 4 - Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring ππ electron system.

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Concepts Used:

Amines

Amine is a type of compound which is derived from ammonia (NH3). According to Organic chemistry, they are basically classified as the functional groups of the organic nitrogen compounds that contain nitrogen atoms with a lone pair.

Amine - Types

Primary Amines:

It is formed when one hydrogen atom in ammonia is substituted by an alkyl or aromatic group. Amino acids and methyl amine are the best examples that why aromatic amines include aniline.

Secondary Amines:

Amines that have two organic substitutes either alkyl or aryl ones or both and are bound to the nitrogen together with one hydrogen are termed as secondary amines. For Example, Dimethylamine.

Tertiary Amines:

Tertiary Amines are the amines where the nitrogen consists of three organic substitutes. For example, Trimethylamine and EDTA.