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Question
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 0.0500 M solution of alanine after 25.00 mL of 0.100 M NaOH has been added?A) 2.34
B) 4.85
C) 5.59
D) 6.72
Answer
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