Peter Stewart believed th
Peter Stewart believed that SID and the partial pressure of carbon dioxide in water can determine this quantity, which is plotted on the x-axis of a Pourbaix diagram. A glass electrode is used to measure this quantity, which is estimated in the HendersonHasselbalch equation. At high values of this quantity, the indicator phenolphthalein [fee-nawl-THAL-een] turns from colorless to pink. The compound Tris is used to resist changes in this quantity and is called a buffer. For 10 points, name this quantity that expresses the acidity or basicity of a solution, and is seven for water.
Peter Stewart believed that SID and the partial pressure of carbon dioxide in water can determine this quantity, which is plotted on the x-axis of a Pourbaix diagram.