Chapter 17.3, Problem 9CP

Referring to the titration curve shown in Figure 17.5, what is the predominant species in solution when the pH is 9.86?

$\begin{array}{l}\text{a)}\hfill \\ {\text{H}}_{\text{3}}{\text{O}}^{-}\hfill \\ \text{b)}\hfill \\ {\text{OH}}^{\text{-}}\hfill \\ \text{c)}\hfill \\ {\text{SO}}_3^2\hfill \\ \text{d)}\hfill \\ {\text{HSO}}_3^{-}\hfill \\ \text{e)}\hfill \\ {\text{H}}_{\text{2}}{\text{SO}}_{\text{3}}\hfill \end{array}$