18.0 mL of 0.126 M diprotic acid (H 2A) was titrated with 0.1021 M KOH. The acid ionization constants for the acid are Ka1 = 5.2 x 10 -5 and Ka2 = 3.4 x 10 -10.
a. At what added volume of base does the first equivalence point occur?
b. At what added volume of base does the second equivalence point occur?
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