Answer: Option A
:
A
Salts of a strong acid and a strong base are neutral with pH value of 7. On the other hand, salts of a strong acid and weak base are acidic with pH value less than 7 and those of a strong base and weak acid are basic in nature, with pH value more than 7.
$\bullet$$N{H}_{4}Cl$ is a salt of weak base$\left(N{H}_{4}OH\right)$ and strong acid $\left(HCl\right)$.Hence, it is a acidic salt.
$\bullet$$C{H}_{3}COONa$ is salt of weak acid$\left(C{H}_{3}COOH\right)$ and strong base $\left(NaOH\right)$. Hence, it is a basic salt.
$\bullet$$KCl$ is salt of strong acid$\left(HCl\right)$ and strong base$\left(KOH\right)$. Hence, it is a neutral salt.
$\bullet$$NaCl$ is salt of strong acid$\left(HCl\right)$ and strong base$\left(NaOH\right)$. Hence, it is a neutral salt.