The figure below shows the titration curve for the amino acid aspartic acid. There are five key points in the titration designated with roman numerals. For each of the statements following the figure, identify the appropriate key point of the titration

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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The figure below shows the titration curve for the amino acid aspartic acid. There are five key points in the titration designated with roman numerals. For each of the statements following the figure, identify the appropriate key point of the titration
PH
14
12
10
8
6
4
2-
0
0
I
PH 3.9
PH 3.0
PH 2,1
EI
ㅠ
0.5
(31
1.0
1.5
2.0
1/21
2.5
Equivalents of OH-
3.0
(1) pH is the pKa of the a carboxylate.
(2) pH is the pKa of the amine group.
(3) Average net charge of aspartate is -2
(4) Average net charge of aspartate is +1
(5) Average net charge of aspartate is O
Transcribed Image Text:PH 14 12 10 8 6 4 2- 0 0 I PH 3.9 PH 3.0 PH 2,1 EI ㅠ 0.5 (31 1.0 1.5 2.0 1/21 2.5 Equivalents of OH- 3.0 (1) pH is the pKa of the a carboxylate. (2) pH is the pKa of the amine group. (3) Average net charge of aspartate is -2 (4) Average net charge of aspartate is +1 (5) Average net charge of aspartate is O
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