Question

Which of the following salts will not undergo hydrolysis?

• A. $NaCl$
• B. $KCl$
• C. ${NH}_{4}Cl$
• D. ${CH}_{3}COONa$

Answer 1

Answer: (A), (B)

The salt of strong acid and strong base like $NaCl,KCl$ does not undergo hydrolysis.

In this case, neither the cations nor the anion undergoes hydrolysis. Therefore, the solution remains neutral.

In the aqueous solution of $NaCl,KCl$ its ions$N{a}^{+},K^{+}$ and $C{l}^{–}$ ions have no tendency to react with $H^{+}$ or $O{H}^{–}$ ions of water. This is because the possible products of such reaction are $NaOH,KOH$ and $HCl$, which are they completely dissociated.

As a result, there is no change in the concentration of $H^{+}$ and $O{H}^{–}$ ions and hence the solution continues to remain neutral.

Hence options A, B are correct.