Question

Ammonium ion is

• A. a conjugate acid.
• B. a conjugate base
• C. neither an acid nor a base
• D. both an acid and a base

Answer 1

Answer: (A)

$\underset{\text{ base }}{N{H}_3}+H^{+}⟶\underset{\text{ conjugate acid }}{N{H}_4^{+}}$
Hence, ammonium ion is a conjugate acid of ammonia.