Study Biology

Question 1

(Multiple Choice)

Titration of valine by a strong base, for example NaOH, reveals two pK's. The titration reaction occurring at pK2 (pK2 = 9.62) is:


A) -COOH + OH- →\rightarrow -COO- + H2O.
B) -COOH + -NH2 →\rightarrow -COO- + -NH2+.
C) -COO- + -NH2+ →\rightarrow -COOH + -NH2.
D) -NH3+ + OH- →\rightarrow -NH2 + H2O.
E) -NH2 + OH- →\rightarrow -NH- + H2O.

Answer

D

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