Mention pH in a classroom and you can almost see the inner yawn on the faces of your students. The definition may even roll easily from their lips. However, despite multiple exposures to the relationship of pH and pKa throughout a typical undergraduate science curriculum, students struggle to differentiate between a property of a molecule (pKa) and the impact of molecules, such as acids and bases, on the environmental conditions (pH). Even fewer are comfortable applying their knowledge to predic…