Chemistry - Ionic Equilibrium Question with Solution | TestHub

$\left[{\mathrm{H}}^{+}\right]=10^{-8}\mathrm{M}$ Due to dilute solution. $$\begin{array}{rl}\left[{\mathrm{H}}^{+}\right]& =10^{-8}+10^{-7}\mathrm{M}\\ & =10^{-7}[0.1+1]\mathrm{M}\\ & =1.1\times 10^{-7}\mathrm{M}\\ & =1.1\times 10^{-7}\mathrm{M}\end{array}$$ Caution In an aqueous solution of $10^{-8}\mathrm{M}\mathrm{HCl},\left[{\mathrm{H}}^{+}\right]$ is based on the concentration of ${\mathrm{H}}^{+}$ions of $10^{-8}\mathrm{M}\mathrm{HCl}$ and the concentration of ${\mathrm{H}}^{+}$ions of water.