Question

$N{H}_4^{+}$ ion in aqueous solution will behave as a/an:

• A. base
• B. acid
• C. both acid and base
• D. neutral

Answer 1

Answer: (B)

acid

Ammonia, weak base in water forms ammonium ions. It is positively charged polyatomic ion which is mildly acidic reacting with Bronsted bases. The degree to which ammonia forms the ammonium ion depends on the $pH$ of the solution.