question_answer 1)

  Assertion (A): Aqueous solution of ammonium carbonate is basic. Reason (R): Acidic/basic nature of a salt solution of a salt of weak acid and weak base depends on \[{{K}_{a}}\] and \[{{K}_{b}}\] value of the acid and the base forming it.

Answer:

  (a) Aqueous solution of ammonium carbonate, a salt of weak acid and weak base becomes basic after hydrolysis because: \[{{K}_{b}}(N{{H}_{4}}OH)>{{K}_{a}}({{H}_{2}}C{{O}_{3}})\]