Chemistry - AMINES Question with Solution | TestHub

Question Explanation:

The question asks which given statement about basic strength is correct.

Concept:

Basicity depends on the +I effect, resonance, and stability of the conjugate acid (RNH₃⁺).

Solution:

1. Aliphatic amines are stronger bases than ammonia due to the +I effect of alkyl groups. (Correct)

2. Aryl ammonium ions are more stabilized than ammonia — (Incorrect)

Reason: The aryl group has a –I effect and no resonance stabilization in the ammonium form, so the ion is less stabilized than NH₄⁺ .

3.Alkyl groups stabilize alkyl ammonium ions more than ammonium ion — (Correct) Reason: Alkyl groups donate electrons (+I effect), dispersing the positive charge and increasing stability.

4.Aryl groups stabilize aryl ammonium ions less than ammonium ion — (Correct)