Chemistry - Ionic Equilibrium Question with Solution | TestHub

Two solutions,$\mathrm{}\mathrm{A}$and$\mathrm{B},\mathrm{}$each of$100\mathrm{}\mathrm{L}$was made by dissolving$4\mathrm{}\mathrm{g}$of$\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$and$9.8\mathrm{}\mathrm{g}$of${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$in water, respectively. The$\mathrm{p}\mathrm{H}$of the resultant solution obtained from mixing$40\mathrm{}\mathrm{L}$of solution$\mathrm{A}$and$10\mathrm{}\mathrm{L}$of solution$\mathrm{B}$is ____________.$(\log 2=0.3)$