Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 45P
Related questions
Question
Calculate the pH of the following buffer solutions:
(a) a solution made by dissolving 2.668 g KH2PO4 and 2.095 g K2HPO4 in water to give 200. mL of solution. Stepwise acid dissociation constants for phosphoric acid may be found in your textbook.
(b) a solution made by mixing 35.00 mL 0.33 M NH2OH with 15.00 mL 0.27 M NH3OHCl. The base dissociation constant Kb is 6.60 x 10-9 for NH2OH. Assume that the final volume is the sum of the volunes of the two solutions that are mixed.
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