Consider a buffer solution containing a weak acid, HX, and a salt of the weak acid's conjugate base, NaX. Under what conditions is the pH greater than the p K _a of the weak acid?

Question

Quizplus · Accepted Answer

When [HX] < [NaX], the concentration of the conjugate base (X-) is higher than the concentration of the weak acid (HX), which results in a pH greater than the pKa of the weak acid. This is because the higher concentration of the conjugate base will better neutralize added H+, leading to a more basic solution.

Consider a Buffer Solution Containing a Weak Acid, HX, and a Salt