Chapter 8.2, Problem 8.11P

When ascorbic acid (vitamin C, molecular formula C₆H₈O₆) is dissolved in water, the following acid–base reaction occurs. Label the conjugate acid–base pairs in the given equation.

$\begin{array}{l}{\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{6}}(aq)+{\text{H}}_2\text{O(}l\text{)}\\ \text{vitamin C}\end{array}$ ⇄ ${\text{C}}_{\text{6}}{\text{H}}_{\text{7}}{\text{O}}_{\text{6}}{}^{-}(aq)+{\text{H}}_3{\text{O}}^{\text{+}}\text{(}aq\text{)}$