Question

Which salts undergo hydrolysis?
(1) $NaCl$
(2) $CH _{3} COONa$
(3) $KNO _{3}$
(4) $NH _{4} Cl$

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (C)

$NaCl$ and $KNO _{3}$ salts do not undergo hydrolysis because they are salts of strong base and strong acid. While $CH _{3} COONa$ and $NH _{4} Cl$ undergo hydrolysis.
$CH _{3} COONa + H _{2} O \longrightarrow CH _{3} COOH + NaOH $
$NH _{4} Cl + H _{2} O \longrightarrow NH _{4} OH + HCl$