chapter 13 Amines Class 12 Chemistry Textbook Solution

2. Answer in one sentence.

v. Why are primary aliphatic amines stronger bases than ammonia ?

Answer:-

  • Presence of an alkyl group exerts an electron-releasing inductive effect (+I effect), stabilizing the positive charge on the bonded atom.
  • The conjugate acid of ammonia is NH₄⁺, while that of 1° amine is RNH₃⁺.
  • Due to the alkyl group, RNH₃⁺ is more stable compared to NH₄⁺.
  • Primary aliphatic amines are consequently stronger bases than ammonia.

13 Amines Class 12 Chemistry Textbook Solution page 296