When a salt of a weak acid and a weak base is dissolved in water at $25\,^{\circ}C$,the $pH$ of the resulting solution will always :-

$A$ solution of (salt + water) has a $pH > 7$. The salt is formed from:

It is found that at $25\,\text{°C}$,$0.1\,M$ solutions of four sodium salts $NaA$,$NaB$,$NaC$,and $NaD$ have the $pH$ values $7$,$9$,$10$,and $11$ respectively. Which one of the corresponding acids is the strongest?

Which of the following salt solutions is highly acidic?

The degree of hydrolysis in hydrolytic equilibrium $A^{-} + H_2O \rightleftharpoons HA + OH^{-}$ at salt concentration of $0.001 \ M$ is $(K_a = 1 \times 10^{-5})$

The ionization constant of ammonium hydroxide at $298 \ K$ is $1.77 \times 10^{-5}$. Calculate the hydrolysis constant of ammonium chloride.