Question

Calculate $\left(i\right)$ the degree of hydrolysis of ammonium acetate. The dissociation constant for ${NH}_{4}OHis4\times {10}^{-5}$ and that of$C{H}_{3}COOHis1.8\times {10}^{-5}$ (ii) also calculate its $pH$ value.

Answer 1

$pH=\frac{1}{2}[p^{K_w}+p^{K_a}-p^{K_b}]$

$=\frac{1}{2}[14-\log (4\times {10}^{-5}+\log (1.8\times {10}^{-5})]$

$pH=3.65$ .