Histidine has three ionizable groups with pKa values of 1.8, 6.0 and 9.2. What is the pH of a solution comprised of 0.22 M of ionization state I, and 0.55 M of ionization state II? H₂N-CH- N CH₂ I -NH 2.2 5.6 6.4 8.8 9.6 H₂N-CH-C- CH₂ N O _i_L_.. II -NH

Histidine has three ionizable groups with pKa values of 1.8, 6.0 and 9.2. What is the pH of a solution comprised of 0.22 M of ionization state I, and 0.55 M of ionization state II? H₂N-CH- N CH₂ I -NH 2.2 5.6 6.4 8.8 9.6 H₂N-CH-C- CH₂ N O _i_L_.. II -NH

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter16: Reactions Between Acids And Bases

Section: Chapter Questions

Problem 16.84QE: Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH 8.3) and pink...

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Question

Histidine has three ionizable groups with pKa values of 1.8, 6.0 and 9.2. What is the
pH of a solution comprised of 0.22 M of ionization state I, and 0.55 M of ionization
state II?
H₂N-CH-
|
CH₂
I
2.2
5.6
6.4
8.8
9.6
-NH
H₂N-CH-C-
CH₂
II
-NH

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Kk.232.
-Buffer Preparation-