Chemistry - Ionic Equilibrium Question with Solution | TestHub

$\mathrm{3 }\mathrm{}\mathrm{g}$of acetic acid is added to$\mathrm{250 }\mathrm{}\mathrm{m}\mathrm{L}$of$\mathrm{0.1 }\mathrm{M} \mathrm{H}\mathrm{C}\mathrm{l}$and the solution made up to$\mathrm{500 }\mathrm{}\mathrm{m}\mathrm{L}$. To$\mathrm{20 }\mathrm{}\mathrm{m}\mathrm{L}$of this solution$\frac{1}{\mathrm{2 }}\mathrm{m}\mathrm{L}$of$5\mathrm{M} \mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$is added. The$\mathrm{p}\mathrm{H}$of the solution is ________
[Given:$\mathrm{p}\mathrm{K}\mathrm{a}$of acetic acid$=4.75,$molar mass of acetic acid$\mathrm{60 }\mathrm{g}/\mathrm{m}\mathrm{o}\mathrm{l},\log 3=0.4771$, Neglect any changes in volume]