What will be the ph salt made from strong acid and weak base

1.	What will be the ph salt made from strong acid and weak base
Answer» $\textbf{\large{Answer -}}$ The solution of salt of strong ACID and weak base are acidic in NATURE i.e., $\textbf {\underline {pH of solution will be always less than 7.}}$ The salt of strong acid and weak base are $NH_{4}Cl, (NH_{4})_{2}SO_{4}, NH_{4}NO_{3}.$ EXAMPLE : $NH_{4}Cl + H_{2}O ==> NH_{4}OH + HCl$ Here $NH_{4}Cl$ and $HCl$ are strong, so they will be dissociated as follow : ${NH_{4}}^{+} + {Cl}^{-} + H_{2}O ==> NH_{4}OH + {H}^{+} + {Cl}^{-}$ $\boxed{{NH_{4}}^{+} + H_{2}O ==> NH_{4}OH + {H}^{+}}$