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Consider a buffer made by adding 57.9 g of (CH3)2NH₂l to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x 10-1) L What is the pH of this buffer? L What is the pH of the buffer after 0.300 mol of H+ have been added? L What is the pH of the buffer after 0.120 mol of OH- have been added?

Consider a buffer made by adding 57.9 g of (CH3)2NH₂l to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x 10-1) L What is the pH of this buffer? L What is the pH of the buffer after 0.300 mol of H+ have been added? L What is the pH of the buffer after 0.120 mol of OH- have been added?

General Chemistry - Standalone book (MindTap Course List)
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 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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Consider a buffer made by adding 57.9 g of (CH3)2NHz to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x 10-4) L What is the pH of this buffer? L What is the pH of the buffer after 0.300 mol of H- have been added? L What is the pH of the buffer after 0.120 mol of OH- have been added? >
Transcribed Image Text:Consider a buffer made by adding 57.9 g of (CH3)2NHz to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x 10-4) L What is the pH of this buffer? L What is the pH of the buffer after 0.300 mol of H- have been added? L What is the pH of the buffer after 0.120 mol of OH- have been added? >
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