In a hypothetical experiment, you must make a buffer that will hold its pH near pH 7.1. Which of the following equilibrium systems is most likely to be used when creating this buffer and why? (1) (H3)(PO4)(aq)+H2O(l)⟷(H2)(PO4)−(aq)+(H3)O+(aq) pKa1 = 2.148 (2) (H2)(PO4)−(aq)+H2O(l)⟷(H)(PO4)2−(aq)+(H3)O+(aq) pKa2 = 7.198 (3) (H)(PO4)2−(aq)+H2O(l)⟷(PO4)3−(aq)+(H3)O+(aq) pKa3 = 12.35
In a hypothetical experiment, you must make a buffer that will hold its pH near pH 7.1. Which of the following equilibrium systems is most likely to be used when creating this buffer and why? (1) (H3)(PO4)(aq)+H2O(l)⟷(H2)(PO4)−(aq)+(H3)O+(aq) pKa1 = 2.148 (2) (H2)(PO4)−(aq)+H2O(l)⟷(H)(PO4)2−(aq)+(H3)O+(aq) pKa2 = 7.198 (3) (H)(PO4)2−(aq)+H2O(l)⟷(PO4)3−(aq)+(H3)O+(aq) pKa3 = 12.35
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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In a hypothetical experiment, you must make a buffer that will hold its pH near pH 7.1. Which of the following equilibrium systems is most likely to be used when creating this buffer and why?
(1) (H3)(PO4)(aq)+H2O(l)⟷(H2)(PO4)−(aq)+(H3)O+(aq) pKa1 = 2.148
(2) (H2)(PO4)−(aq)+H2O(l)⟷(H)(PO4)2−(aq)+(H3)O+(aq) pKa2 = 7.198
(3) (H)(PO4)2−(aq)+H2O(l)⟷(PO4)3−(aq)+(H3)O+(aq) pKa3 = 12.35
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