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1. Chemical Measurements1h 50m
2. Tools of the Trade1h 17m
3. Experimental Error1h 52m
4 & 5. Statistics, Quality Assurance and Calibration Methods1h 57m
6. Chemical Equilibrium3h 41m
7. Activity and the Systematic Treatment of Equilibrium1h 0m
8. Monoprotic Acid-Base Equilibria1h 53m
9. Polyprotic Acid-Base Equilibria2h 17m
10. Acid-Base Titrations2h 37m
11. EDTA Titrations1h 34m
12. Advanced Topics in Equilibrium1h 16m
13. Fundamentals of Electrochemistry2h 19m
14. Electrodes and Potentiometry41m
15. Redox Titrations1h 14m
16. Electroanalytical Techniques57m
17. Fundamentals of Spectrophotometry50m

9. Polyprotic Acid-Base Equilibria

Isoelectric and Isoionic pH

Analytical Chemistry9. Polyprotic Acid-Base EquilibriaIsoelectric and Isoionic pH

Multiple Choice

Multiple Choice

Calculate the pI value for gluatamic acid. pK_a1 (carboxyl group) = 2.16, pK_a2 (ammonium group) = 9.96, pK_a3 (R-group) = 4.30.

A

6.06

B

7.13

C

3.23

D

5.47

E

7.00

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