For solutions that are not dilute and aqueous, this quantity may be replaced by the Hammett function.
Inside the body, this quantity is tightly maintained by the enzyme carbonic anhydrase. For solutions that are not dilute and aqueous, this quantity may be replaced by the Hammett function. Soren Sorenson introduced this quantity, which is equal to the base-ten logarithm of conjugate base over conjugate acid plus pKa by the Henderson-Hasselbalch equation. Phenolphthalein turns pink when this quantity reaches about nine. For 10 points, name this quantity that measures the acidity of a solution on a namesake logarithmic scale.
Inside the body, this quantity is tightly maintained by the enzyme carbonic anhydrase.
pH [accept acidity before "Sorenson" and prompt on it thereafter]