<Post-Lecture Ch 17 Exercise 17.78 19 of 19 R. Review l Constants l Periodic Table Part A 19.0-mL sample of 0.123 M diprotic acid (H A) solution is itrated with 0.1012 MKOH, The acid ionization constants for At what added volurne of base does the first equivalence point occur? the acid are Ka 5.2 x 10-5 and K3.4 x 10-10 V- mL Submit Requesl Answer Part B At what added volume of base does the second equivalence point occur? mL Submit < Return to Assignment Provide Feedback