79.5 mL of 0.1M citric acid and 22.55 mL of 0.2M Na2HPO4 give a buffer of pH 3.0. What weights of solids would be needed to make up to 200 mL of a buffer pH 3.0 and 50 mmol/L in phosphate. Citric acid comes as the monohydrate (M.Wt = 210), whilst Na2HPO4 is supplied as the dihydrate (M.Wt = 178).
79.5 mL of 0.1M citric acid and 22.55 mL of 0.2M Na2HPO4 give a buffer of pH 3.0. What weights of solids would be needed to make up to 200 mL of a buffer pH 3.0 and 50 mmol/L in phosphate. Citric acid comes as the monohydrate (M.Wt = 210), whilst Na2HPO4 is supplied as the dihydrate (M.Wt = 178).
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.142QP: K4 for acetic acid is 1.7 105 at 25C. A buffer solution is made by mixing 52.1 mL of 0.122 M acetic...
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