Each line represents a form of the amino acid (red=overall). Draw the 3 structures and give their charge How would you estimate the pI of the amino acid based on the graph? How would you estimate the pKa of the carboxylic group and ammonium group based on the graph?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Each line represents a form of the amino acid (red=overall).

  1. Draw the 3 structures and give their charge
  2. How would you estimate the pI of the amino acid based on the graph?
  3. How would you estimate the pKa of the carboxylic group and ammonium group based on the graph?
1.0
0.6
DE
0.5
Fraction of species
0.9
0.8
0.7
0.4
0.3
0.2
0.1
0.0
0.0
2.0
4.0
6.0
pH
8.0
10.0
12.0
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
14.0
Total Charge
Transcribed Image Text:1.0 0.6 DE 0.5 Fraction of species 0.9 0.8 0.7 0.4 0.3 0.2 0.1 0.0 0.0 2.0 4.0 6.0 pH 8.0 10.0 12.0 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 14.0 Total Charge
H₂N
OH
О
ОН
Transcribed Image Text:H₂N OH О ОН
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