AP Chemistryeasymcq1 pt
At which point in the titration of a weak acid with NaOH does pH = pKa?
A.Half-equivalence point
B.Equivalence point
C.Start of the titration
D.After excess base is added
Explanation
Core Concept
At the midpoint, half the acid is neutralized, so [HA] = [A⁻] and the Henderson–Hasselbalch log term vanishes — pH equals pKa exactly.
Correct Answer
AHalf-equivalence point
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