Question

Which of the following salt give acidic solution?

• A. $\mathrm{NaCl}$
• B. ${\mathrm{NH}}_4\mathrm{Cl}$
• C. ${\mathrm{Na}}_2{\mathrm{CO}}_3$
• D. None Of These

Answer 1

The correct option is B

${\mathrm{NH}}_4\mathrm{Cl}$

Explanation for the correct options:

(B)${\mathrm{NH}}_4\mathrm{Cl}$

• ${\mathrm{NH}}_4\mathrm{Cl}$ is a salt.
• It is formed from a strong acid $\mathrm{HCl}$ and a weak base ${\mathrm{NH}}_4\mathrm{OH}$.
• So the solution of ${\mathrm{NH}}_4\mathrm{Cl}$ is acidic in nature.

Explanation for the incorrect options:

(A)$\mathrm{NaCl}$

• $\mathrm{NaCl}$ is a neutral salt of $\mathrm{HCl}$ and $\mathrm{NaOH}$, hence makes neutral solution.

(C)${\mathrm{Na}}_2{\mathrm{CO}}_3$

• ${\mathrm{Na}}_2{\mathrm{CO}}_3$ is produced by the combination of sodium hydroxide and carbonic acid and it is a basic salt, so ${\mathrm{Na}}_2{\mathrm{CO}}_3$ cannot give an acidic solution.

Hence, option (B) is correct., ${\mathrm{NH}}_4\mathrm{Cl}$ can give an acidic solution.