A chemist needs a solution buffered at pH 4.30 and can choose from the following acids
Chapter 15, Problem 15.9(choose chapter or problem)
A chemist needs a solution buffered at pH 4.30 and can choose from the following acids (and their sodium salts): a. chloroacetic acid (Ka 5 1.35 3 1023 ) b. propanoic acid (Ka 5 1.3 3 1025 ) c. benzoic acid (Ka 5 6.4 3 1025 ) d. hypochlorous acid (Ka 5 3.5 3 1028 ) Calculate the ratio [HA]y[A2] required for each system to yield a pH of 4.30. Which system will work best?
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