Classify salts based on their hydrolysis and provide examples for each category.

(N/A) Salts can be classified based on their hydrolysis behavior as follows:
$1$. Salts of strong acid and strong base: These salts do not undergo hydrolysis,and their aqueous solutions are neutral $(pH = 7)$. Examples: $NaCl, NaNO_{3}, KNO_{3}, K_{2}SO_{4}$.
$2$. Salts of weak acid and strong base: The anion of the weak acid undergoes hydrolysis,resulting in a basic solution $(pH > 7)$. Examples: $CH_{3}COONa, K_{3}PO_{4}, Na_{2}CO_{3}, NaHCO_{3}$.
$3$. Salts of strong acid and weak base: The cation of the weak base undergoes hydrolysis,resulting in an acidic solution $(pH < 7)$. Examples: $NH_{4}Cl, NH_{4}NO_{3}, CuSO_{4}, FeCl_{3}$.
$4$. Salts of weak acid and weak base: Both the cation and anion undergo hydrolysis. The nature of the solution $(pH)$ depends on the relative dissociation constants ($K_{a}$ and $K_{b}$) of the weak acid and weak base. Examples: $CH_{3}COONH_{4}, HCOONH_{4}$.