Chapter 16, Problem 16.146QP

The titration curve shown represents the titration of a weak dibasic base (for example, a compound that contains two □NH₂ groups) versus HCl. Identify the major species present at the marked points and estimate the $\text{p}{K}_{{\text{a}}_1}$ and $\text{p}{K}_{{\text{a}}_2}$ values of the base.