The amino acid alanine, HOOC-CH(CH3) NH3+,Has Ka1 = 4.5 *10-3 and Ka2 = 1.4 * 10-10.Calculate (HOOC-CH(CH3) NH3+) At pH 3.
A) 0
B) 0.82
C) 0.58
D) 0.29
E) 0.18
Correct Answer:
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