Lysine (K) is a triprotic amino acid whose most protonated form has a charge of 2+. Its acid dissociation constants are pKa1 = 1.77, pKa2 = 9.07, and pKa3 = 10.82. For numbers 1 and 2 refer to the following choices. Write only the letter corresponding to your answer. a. H3K2+ b. H2K2+ c. HK2+ d. H3K* e. H2K* f. HK* g. H3K h. H2K i. HK j. H2K" k. HK- I. K m. HK2- n. K2- o. K3- 1) At pH 7.47, the second most abundant species is 2) What is the third most abundant species at this pH? 3) At what pH is the concentration of the diprotic species equal to the concentration of the fully deprotonated species. (ANSWER FORMAT: If for example, the answer is 7.12, then c = 7, m =12)
Lysine (K) is a triprotic amino acid whose most protonated form has a charge of 2+. Its acid dissociation constants are pKa1 = 1.77, pKa2 = 9.07, and pKa3 = 10.82. For numbers 1 and 2 refer to the following choices. Write only the letter corresponding to your answer. a. H3K2+ b. H2K2+ c. HK2+ d. H3K* e. H2K* f. HK* g. H3K h. H2K i. HK j. H2K" k. HK- I. K m. HK2- n. K2- o. K3- 1) At pH 7.47, the second most abundant species is 2) What is the third most abundant species at this pH? 3) At what pH is the concentration of the diprotic species equal to the concentration of the fully deprotonated species. (ANSWER FORMAT: If for example, the answer is 7.12, then c = 7, m =12)
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section: Chapter Questions
Problem 38QRT
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