A weak monoprotic acid HA is titrated with NaOH; the curve is shown.
What does pH at the half-equivalence point equal?
- Acheck_circle
pKa
- B
pH at the equivalence point
- C
7.00
- D
pKb
Explanation
At the half-equivalence point [HA] = [A-], so by Henderson-Hasselbalch pH = pKa + log(1) = pKa.