Calculate the pH at each of the following points for the titration of 100 mL of 0. 6 M dl-Histidine with the following volumes of 1.20 M sodium hydroxide. H3His ↔ H+ + H2His- Ka1 = 3.98x10-3 H2His- ↔ H+ + HHis2- Ka2 = 9.12x10-7 HHis2- ↔ H+ + His3- Ka3 = 4.67x10-10 Vol. of NaOH Calculated pH 0 mL 30 mL 50 mL 75 mL 100 mL 125 mL 135 mL 150 mL 175 mL Please provide a sketch of the titration curve and label both the x & y axis and applicable equations used at each data point (e.g., pH = - log[H+] or pH = pKa or pH = pKa + log )
Calculate the pH at each of the following points for the titration of 100 mL of 0. 6 M dl-Histidine with the following volumes of 1.20 M sodium hydroxide. H3His ↔ H+ + H2His- Ka1 = 3.98x10-3 H2His- ↔ H+ + HHis2- Ka2 = 9.12x10-7 HHis2- ↔ H+ + His3- Ka3 = 4.67x10-10 Vol. of NaOH Calculated pH 0 mL 30 mL 50 mL 75 mL 100 mL 125 mL 135 mL 150 mL 175 mL Please provide a sketch of the titration curve and label both the x & y axis and applicable equations used at each data point (e.g., pH = - log[H+] or pH = pKa or pH = pKa + log )
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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Calculate the pH at each of the following points for the titration of 100 mL of 0. 6 M dl-Histidine with the following volumes of 1.20 M sodium hydroxide.
H3His ↔ H+ + H2His- Ka1 = 3.98x10-3
H2His- ↔ H+ + HHis2- Ka2 = 9.12x10-7
HHis2- ↔ H+ + His3- Ka3 = 4.67x10-10
|
Vol. of NaOH |
Calculated pH |
|
0 mL |
|
|
30 mL |
|
|
50 mL |
|
|
75 mL |
|
|
100 mL |
|
|
125 mL |
|
|
135 mL |
|
|
150 mL |
|
|
175 mL |
|
Please provide a sketch of the titration curve and label both the x & y axis and applicable equations used at each data point (e.g., pH = - log[H+] or pH = pKa or pH = pKa + log )
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