Equivalence point pH: weak acid with strong base
At the equivalence point of a titration of acetic acid with NaOH, the pH is:
Answer D: explanation for every choice
A
A pH of 7 at equivalence occurs for strong acid–strong base titrations.
B
An acidic equivalence point occurs for weak base–strong acid titrations.
C
pH equals pKa at the half-equivalence point.
D
Correct. At equivalence, the solution contains acetate, which reacts with water to form OH⁻.
TakeawayWeak acid + strong base: equivalence pH > 7. Half-equivalence: pH = pKa.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID cp42.