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11.0 12 0 10.0 Hd HJ 8.0 6.0 4.0 2.0 0.0 20 20 40 60 80 100 120 140 160 Volume (mL)

11.0 12 0 10.0 Hd HJ 8.0 6.0 4.0 2.0 0.0 20 20 40 60 80 100 120 140 160 Volume (mL)

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter13: Gases
Section: Chapter Questions
Problem 2QAP
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Using the titration curve below, complete the tasks.

a. First DIRECTLY ON THE GRAPH label the following:
i. Volume of NaOH at the first and second equivalence points
ii. Volume of NaOH at the first and second halfway points
iii. pH at both halfway points
b. Then using that information determine,
i. both pKa values
ii. both Ka values
c. Use the first equivalence point to determine the molar mass of the diprotic acid if
2.43 grams of acid were used with 0.825 M NaOH.

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