Determine which amino acid would give the titration plot given below. What does each point on the curve represent? Draw a stick figure of the the amino acid at each of the 6 points. 14.0 12.0 10.0 8.0 pH 6.0 4.0 2.0 pKa1 = 2.1 pKa2 = 9.0 pI = 10.8 pKa3 = 12.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Equivalents of OH-
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The titration plot has three pKa values: 2.1, 9.0, and 12.5. This indicates that the amino acid has three ionizable groups. Show more…
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