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2. (14 pts) What is the change in pH when a few drops of strong base containing 5.0 x 10-3 moles of [OH-] is added to a liter of either of the following two buffered solutions at pH 6.6 (you can assume the volume remains approximately constant) i) a 250 mM solution of buffer A (pK₂-5.4) (6 pts) ii) a 250 mM solution of buffer B (pKa -7.1) (6 pts) (2 pts) Which solution is the more effective buffer at pH 6.40 (provide a rationale for your answer)? 1. (6 pts) You are given a solution wherein [OH‍] is 3 fold higher than the concentration of [H+]. What is the pH of this solution?

2. (14 pts) What is the change in pH when a few drops of strong base containing 5.0 x 10-3 moles of [OH-] is added to a liter of either of the following two buffered solutions at pH 6.6 (you can assume the volume remains approximately constant) i) a 250 mM solution of buffer A (pK₂-5.4) (6 pts) ii) a 250 mM solution of buffer B (pKa -7.1) (6 pts) (2 pts) Which solution is the more effective buffer at pH 6.40 (provide a rationale for your answer)? 1. (6 pts) You are given a solution wherein [OH‍] is 3 fold higher than the concentration of [H+]. What is the pH of this solution?

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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2. (14 pts) What is the change in pH when a few drops of strong base containing 5.0 x 10-3 moles of [OH-] is added to a liter of either of the following two buffered solutions at pH 6.6 (you can assume the volume remains approximately constant) i) a 250 mM solution of buffer A (pK₂-5.4) (6 pts) ii) a 250 mM solution of buffer B (pKa -7.1) (6 pts) (2 pts) Which solution is the more effective buffer at pH 6.40 (provide a rationale for your answer)?
Transcribed Image Text:2. (14 pts) What is the change in pH when a few drops of strong base containing 5.0 x 10-3 moles of [OH-] is added to a liter of either of the following two buffered solutions at pH 6.6 (you can assume the volume remains approximately constant) i) a 250 mM solution of buffer A (pK₂-5.4) (6 pts) ii) a 250 mM solution of buffer B (pKa -7.1) (6 pts) (2 pts) Which solution is the more effective buffer at pH 6.40 (provide a rationale for your answer)?
1. (6 pts) You are given a solution wherein [OH‍] is 3 fold higher than the concentration of [H+]. What is the pH of this solution?
Transcribed Image Text:1. (6 pts) You are given a solution wherein [OH‍] is 3 fold higher than the concentration of [H+]. What is the pH of this solution?
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