Chemistry - Ionic Equilibrium Question with Solution | TestHub

$\begin{array}{cccccccc} & \mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}& +& \mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}& \to & \mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{N}\mathrm{a}& +& {\mathrm{H}}_2\mathrm{O}\\ \mathrm{m}\mathrm{ }\mathrm{m}\mathrm{o}\mathrm{l}& 2& & 6& & & & \\ & \mathrm{L}\mathrm{R}& & & & & & \\ & -& & 4& & 2& & \end{array}$

The resulting solution is an acidic buffer. so$\text{pH}={\text{pK}}_{\text{a}}+\log \frac{\left[\text{Salt}\right]}{\left[\text{Acid}\right]}$

$=4.71+\log \frac{2}{4}$

$=4.44$