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AP Chemistry
8.7 pH and pKa
8.5 Acid-Base Titrations
IntermediateMCQGraphicalConceptual23k
Titration curve for H2A titrated with 0.10 M NaOH.
Titration curve for H2A titrated with 0.10 M NaOH.
A student titrates a sample of a weak diprotic acid, \(\text{H}_2\text{A}\), with \(0.10 \text{ M NaOH}\). The titration curve generated from the experimental data is shown below. Based on the titration curve, which of the following best identifies the value of \(pK_{a2}\) for \(\text{H}_2\text{A}\) and the reasoning used to determine it?

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