A chemist needs a solution buffered at pH 4.30 and can choose from the following acids: A. Chloroacetic acid (Ka = 1.35 x 10-3) B. Propanoic acid (Ka = 1.30 x 10-5) C. Benzoic acid (Ka = 6.40 x 10-5) D. Hypochlorous acid (Ka = 3.50 x 10-8) Which of the following will be best suited to make the buffer? Show calculations to support your answer.

A chemist needs a solution buffered at pH 4.30 and can choose from the following acids: A. Chloroacetic acid (Ka = 1.35 x 10-3) B. Propanoic acid (Ka = 1.30 x 10-5) C. Benzoic acid (Ka = 6.40 x 10-5) D. Hypochlorous acid (Ka = 3.50 x 10-8) Which of the following will be best suited to make the buffer? Show calculations to support your answer.

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

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 114CWP: Consider the following acids and bases: HCO2H Ka = 1.8 104 HOBr Ka = 2.0 109 (C2H5)2NH Kb = 1.3 ...

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