Q. The correct order of decreasing basic strength of the given amines is:

A) N-methylaniline > benzenamine > ethanamine > N-ethylethanamine
B) N-ethylethanamine > ethanamine > benzenamine > N-methylaniline
C) N-ethylethanamine > ethanamine > N-methylaniline > benzenamine
D) benzenamine > ethanamine > N-methylaniline > N-ethylethanamine
Explanation

[Solution by Claude - not from source] Aliphatic amines are stronger bases than aromatic ones; in water the secondary N-ethylethanamine is stronger than primary ethanamine. N-methylaniline is slightly more basic than aniline (conjugate acid pKa about 4.85 vs 4.6). Order: N-ethylethanamine > ethanamine > N-methylaniline > benzenamine. Answer (3).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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