Question

Match List-1 with List-2.

List -1 List-2
A) $C{H}_{3}COONa+C{H}_{3}COOH$ 1)Acidic due to cationic hydrolysis
B) $N{H}_{4}Cl+N{H}_{4}OH$ 2)Basic due to anionic hydrolysis
C) aqueous $AlC{l}_3$ 3) Basic buffer solution
D) aqueous $N{a}_{2}C{O}_3$ 4)Acidic buffer solution

• A. A - 1 ; B - 2 ; C - 3 ; D - 4
• B. A - 4 ; B - 3 ; C - 1 ; D - 2
• C. A - 2 ; B - 3 ; C - 1 ; D - 4
• D. A - 4 ; B - 3 ; C - 2 ; D - 1

Answer 1

The correct option is B A - 4 ; B - 3 ; C - 1 ; D - 2

Buffer solutions are a mixture of acid and its conjugate base or base and its conjugate acid.
The mixture of acid and conjugate base is called acidic buffer solutions
The mixture of base and conjugate acid is called basic buffer solutions.
Weak acid salts and weak basis salts suffer hydrolysis making their aqueous solutions acidic or basic depending on the type of salt.
$AlC{l}_3+H_{2}O\to Al{\left(OH\right)}_3+C{l}^{-}+H^{+}$
Similarly for $N{a}_{2}C{O}_3$.