An aqueous solution of aluminum chloride is acidic due to $........$.

The $pH$ of an aqueous solution of $CH_3COONH_4$ is found to be $6.7$ at $25\,^{\circ}C$. The concentration of the $CH_3COONH_4$ solution is ($K_a$ for $CH_3COOH = 1.0 \times 10^{-5}$ and $pK_b$ for $NH_4OH = 4.4$)

An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of

The ionization constant of nitrous acid is $4.5 \times 10^{-4}$. Calculate the $pH$ of $0.04 \ M$ sodium nitrite solution and also its degree of hydrolysis.

If $pK_b$ for $CN^{-}$ at $25\,^{\circ}C$ is $3.7$,what is the $pH$ of a $0.5\, M$ aqueous $NaCN$ solution?

$A$ few grams of sodium carbonate $(Na_2CO_3)$ is added to $1 \ L$ of water. What is the $pH$ or $pH$ range of the resultant solution?