What's the pKa1, pKa2, and pKa3 based on the titration data for the unknown amino acid?

Chemistry & Chemical Reactivity
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ISBN:9781337399074
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 54PS: If 55 mg of lead(II) sulfate is placed in 250 mL of pure water, does all of it dissolve? If not, how...
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What's the pKa1, pKa2, and pKa3 based on the titration data for the unknown amino acid?

1. Titration of the Unknown Amino Acid
Vol. NaOH,
ml
0.2
0.4
0.6
0.8
1.
1:2
1:4
21
2.4
2.6
2.8
3
3.2
3.4-
3-6
3.8
4.
4.2
4.4
4.60
4.8
5
5.2.
5.4
5.9.
6.0
6.2
PH
1.9
1.9
2-
2.2
2.4
2.5
2-5
2.7
2.8
2.9
3
3.1
3.1
3.2
3.2
3.2
3.2
3.2
3.3
3.3
3.3
3.4
134
3.5
2.1
Vol. NaOH,
ml
6.4
6-6
6-8
7:0
1.4
7.6
8.0
8.2
2.4
8.6
6.8
a.o
9.4
9.6
9.8
10
10.2
10.4
11
11.2
H
pH
1.8
3.9
4.0
4.2
4.4
4.7
5.4
9.3
9.G
9.7
9.9
10.0
10.2
10.3
10.4
10.G
10.1
10.8
10€
10.9
11.6
11.0
11.0
Va
NaOH
Transcribed Image Text:1. Titration of the Unknown Amino Acid Vol. NaOH, ml 0.2 0.4 0.6 0.8 1. 1:2 1:4 21 2.4 2.6 2.8 3 3.2 3.4- 3-6 3.8 4. 4.2 4.4 4.60 4.8 5 5.2. 5.4 5.9. 6.0 6.2 PH 1.9 1.9 2- 2.2 2.4 2.5 2-5 2.7 2.8 2.9 3 3.1 3.1 3.2 3.2 3.2 3.2 3.2 3.3 3.3 3.3 3.4 134 3.5 2.1 Vol. NaOH, ml 6.4 6-6 6-8 7:0 1.4 7.6 8.0 8.2 2.4 8.6 6.8 a.o 9.4 9.6 9.8 10 10.2 10.4 11 11.2 H pH 1.8 3.9 4.0 4.2 4.4 4.7 5.4 9.3 9.G 9.7 9.9 10.0 10.2 10.3 10.4 10.G 10.1 10.8 10€ 10.9 11.6 11.0 11.0 Va NaOH
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