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A compound has two carboxyls and one aminium group. The pKas of the groups are 1.9, 4.2, and 9.3, respectively. A biochemist has 100 mL of a 0.10 M solution of this compound at a pH of 5.6. She adds 39 mL of 0.1 M NaOH. To the nearest hundredth of a unit, what will be the pH of the solution after addition of the NaOH (assume full stirring to reach a new equilibrium)?

A compound has two carboxyls and one aminium group. The pKas of the groups are 1.9, 4.2, and 9.3, respectively. A biochemist has 100 mL of a 0.10 M solution of this compound at a pH of 5.6. She adds 39 mL of 0.1 M NaOH. To the nearest hundredth of a unit, what will be the pH of the solution after addition of the NaOH (assume full stirring to reach a new equilibrium)?

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A compound has two carboxyls and one aminium group. The pKas of the groups are 1.9, 4.2, and 9.3, respectively. A biochemist has 100 mL of a 0.10 M solution of this compound at a pH of 5.6. She adds 39 mL of 0.1 M NaOH. To the nearest hundredth of a unit, what will be the pH of the solution after addition of the NaOH (assume full stirring to reach a new equilibrium)?
Transcribed Image Text:A compound has two carboxyls and one aminium group. The pKas of the groups are 1.9, 4.2, and 9.3, respectively. A biochemist has 100 mL of a 0.10 M solution of this compound at a pH of 5.6. She adds 39 mL of 0.1 M NaOH. To the nearest hundredth of a unit, what will be the pH of the solution after addition of the NaOH (assume full stirring to reach a new equilibrium)?
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