Question

Match the acids (in List I) with number of acid salts formed by them (in List II).

Answer 1

(A) Hypophosphorus acid $H_{3}P{O}_2$ is a monoprotic acid. Its conjugate base cannot form acid salt.

(B) Orthophosphorus acid $H_{3}P{O}_3$ is a diprotic acid. Its conjugate base forms one acid salt.

(C)Orthophosphoric acid $H_{3}P{O}_4$ is a triprotic acid and its conjugate base can form two acid salts.

(D)Mellitic acid, also called graphitic acid or benzenehexacarboxylic acid $C_{12}{H}_6{O}_{12}$ has total six ionizable hydrogens. Its conjugate base can form five acid salts.