Chemistry - Ionic Equilibrium Question with Solution | TestHub

Number of milliequivalents of $\mathrm{HCl}$ $$=20\times 0.050\times 1=1$$ Number of milliequivalents of $\mathrm{Ba}(\mathrm{OH}{)}_2$ $$=2\times 30\times 0.10=6$$ $\left[{\mathrm{OH}}^{-}\right]$of final solution $$\begin{array}{rl}& \text{ milliequivalents of }\mathrm{Ba}(\mathrm{OH}{)}_2\\ & =\frac{-\text{ milliequivalents of }\mathrm{HCl}}{\text{ total volume }}\\ & =\frac{6-1}{50}=0.1\mathrm{M}\\ & \end{array}$$