Homework Help is Here – Start Your Trial Now!
Science
Chemistry
4. You need to make a buffer with pH as close to 10.00 as possible. Two sets of weak acids and conjugate bases, with the Ka values, are listed below. Which of the two sets would be the best choice? You want a pKa close to the pH. Explain your reasoning. CH3COOH/CH3COO HCO3 /CO;? Ka = 1.80 x 105 Ka = 2.14 x 10-10

4. You need to make a buffer with pH as close to 10.00 as possible. Two sets of weak acids and conjugate bases, with the Ka values, are listed below. Which of the two sets would be the best choice? You want a pKa close to the pH. Explain your reasoning. CH3COOH/CH3COO HCO3 /CO;? Ka = 1.80 x 105 Ka = 2.14 x 10-10

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 15PS: A buffer is composed of formic acid and its conjugate base, the formate ion. (a) What is the pH of a...
See similar textbooks
icon
Related questions
Question
4. You need to make a buffer with pH as close to 10.00 as possible. Two sets of weak acids and conjugate bases, with the Ka values, are listed below. Which of the two sets would be the best choice? You want a pka close to the pH. Explain your reasoning. CH:COOH/CH;coo HCO; /CO,2- Ka = 1.80 x 10s Ka = 2.14 x 10-10 %3D %3D 5. 5 drops of a strong base (0.1 M concentration) was added to a buffer (pH = 7.0), with no apparent change in pH. An additional 5 ml of this strong base was added, and the pH of the solution increased to 13.0. Explain why there was no apparent change in pH in the %3D first case, but a marked change in pH in the second case.
Transcribed Image Text:4. You need to make a buffer with pH as close to 10.00 as possible. Two sets of weak acids and conjugate bases, with the Ka values, are listed below. Which of the two sets would be the best choice? You want a pka close to the pH. Explain your reasoning. CH:COOH/CH;coo HCO; /CO,2- Ka = 1.80 x 10s Ka = 2.14 x 10-10 %3D %3D 5. 5 drops of a strong base (0.1 M concentration) was added to a buffer (pH = 7.0), with no apparent change in pH. An additional 5 ml of this strong base was added, and the pH of the solution increased to 13.0. Explain why there was no apparent change in pH in the %3D first case, but a marked change in pH in the second case.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Acid-Base Titrations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS