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10.0 ml of .15M H3A (Ka1 = 2.5 x 104, Ka2 = 3.5 x 10-8, Ka3 = 5.0 x 10-12) is titrated with .10M NaOH. a) Sketch the titration curve and write in these values on the graph: ml of NaOH used at each endpoint, pH at the start, pH at each endpoint (except the last), pH's at 10%, 90%, and midway through each buffer region, and pH at 50ml past the last endpoint. b) What is the major species at pH = 10.0? (use your curve to prove your answer).

10.0 ml of .15M H3A (Ka1 = 2.5 x 104, Ka2 = 3.5 x 10-8, Ka3 = 5.0 x 10-12) is titrated with .10M NaOH. a) Sketch the titration curve and write in these values on the graph: ml of NaOH used at each endpoint, pH at the start, pH at each endpoint (except the last), pH's at 10%, 90%, and midway through each buffer region, and pH at 50ml past the last endpoint. b) What is the major species at pH = 10.0? (use your curve to prove your answer).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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10.0 ml of .15M H3A (Ka1 = 2.5 x 104, Ka2 = 3.5 x 10-8, Ka3 = 5.0 x 10-12) is titrated with .10M NaOH. %3D %3D a) Sketch the titration curve and write in these values on the graph: ml of NaOH used at each endpoint, pH at the start, pH at each endpoint (except the last), pH's at 10%, 90%, and midway through each buffer region, and pH at 50ml past the last endpoint. b) What is the major species at pH = 10.0? (use your curve to prove your answer). %3D
Transcribed Image Text:10.0 ml of .15M H3A (Ka1 = 2.5 x 104, Ka2 = 3.5 x 10-8, Ka3 = 5.0 x 10-12) is titrated with .10M NaOH. %3D %3D a) Sketch the titration curve and write in these values on the graph: ml of NaOH used at each endpoint, pH at the start, pH at each endpoint (except the last), pH's at 10%, 90%, and midway through each buffer region, and pH at 50ml past the last endpoint. b) What is the major species at pH = 10.0? (use your curve to prove your answer). %3D
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