At what pH does a 0.02 M solution of Ala-Cys exhibit a net charge of -1.5? The pK, for the a-carboxylate of cysteine is 1.96 and the pk, for the a-amino group of alanine is 9.69. O pH - 5.1 O pH- 7.7 O pH -82 O pH-9.7 O pH- 11.1

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
Section14.6: Molecular Structure And Acid Strength
Problem 14.16CE
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At what pH does a 0.02 M solution ol Ala-Cys exhibit a net charge of -1.5? The pK, for the a-carboxylate of cysteine is 1.96 and the pk, for
the a-amino group of alanine is 9.69.
O pH - 5.1
O pH- 7.7
O pH - 8.2
O pH - 9.7
O pH- 11.1
Transcribed Image Text:At what pH does a 0.02 M solution ol Ala-Cys exhibit a net charge of -1.5? The pK, for the a-carboxylate of cysteine is 1.96 and the pk, for the a-amino group of alanine is 9.69. O pH - 5.1 O pH- 7.7 O pH - 8.2 O pH - 9.7 O pH- 11.1
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