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The Dissociation Equilibrium Constants for the Protonated Form of Alanine

Question 162

Multiple Choice

The dissociation equilibrium constants for the protonated form of alanine (a diprotic amino acid H2X+) are Ka1 = 4.6 × 10-3 and Ka2 = 2.0 × 10-10.What is the pH of 50.00 mL of a 0.100 M solution of alanine after 100.00 mL of 0.100 M NaOH has been added?


A) 9) 70
B) 10.69
C) 11.11
D) 12.70

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