Using the titration data below, plot the titration curve of this unknown diprotic amino acid and determine pKa1. Report your final answer to two places after the decimal.Volume NaOH (mL)pH0.002.672.003.004.393.337.863.6712.464.0017.064.3320.574.6722.755.0023.945.3324.595.6725.006.0025.416.3326.066.6727.257.0029.427.3332.927.6737.508.0042.088.3345.578.6747.739.0048.919.3349.519.6749.8310.0050.0510.3350.3010.6750.7311.0051.6411.3353.6411.6758.3312.0070.5912.33114.9712.67

Volume of NaOH pH 0 2.67 2 3 4.39 3.33 7.86 3.67 12.46 4 17.06 4.33 20.67 4.67 22.75…

Answered: Using the titration data below, plot…

Using the titration data below, plot the titration curve of this unknown diprotic amino acid and determine pKa1. Report your final answer to two places after the decimal.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter21: Potentiometry

Section: Chapter Questions

Problem 21.22QAP

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Question

Using the titration data below, plot the titration curve of this unknown diprotic amino acid and determine pK_a1. Report your final answer to two places after the decimal.

Volume NaOH (mL)	pH
0.00	2.67
2.00	3.00
4.39	3.33
7.86	3.67
12.46	4.00
17.06	4.33
20.57	4.67
22.75	5.00
23.94	5.33
24.59	5.67
25.00	6.00
25.41	6.33
26.06	6.67
27.25	7.00
29.42	7.33
32.92	7.67
37.50	8.00
42.08	8.33
45.57	8.67
47.73	9.00
48.91	9.33
49.51	9.67
49.83	10.00
50.05	10.33
50.30	10.67
50.73	11.00
51.64	11.33
53.64	11.67
58.33	12.00
70.59	12.33
114.97	12.67

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