Question

Which of the following is not an acidic salt solution in aqueous medium?

• A. $ZnS{O}_4$
• B. $N{H}_{4}N{O}_3$
• C. $CuS{O}_4$
• D. $N{a}_{2}C{O}_3$

Answer 1

Answer: (D)

The correct option is D $N{a}_{2}C{O}_3$

Acidic salt solution is a salt of strong acid and weak base.

$\underset{Weakbase}{\underset{}{C{u}^{2+}}}+\underset{Strongacid}{\underset{}{H_{2}S{O}_4}}\left(Acidic\right)$

$\underset{Weakbase}{\underset{}{Z{n}^{+2}}}+\underset{Strongacid}{\underset{}{H_{2}S{O}_4}}\left(Acidic\right)$

$\underset{Weakbase}{\underset{}{N{H}_{4}OH}}+\underset{Strongacid}{\underset{}{H_{2}S{O}_4}}\left(Acidic\right)$

$\underset{Strongbase}{\underset{}{NaOH}}+\underset{Weakacid}{\underset{}{H_{2}C{O}_3}}\left(Basic\right)$

Thus, $N{a}_{2}X{O}_3$ is not an acidic salt solution in aqueous medium.