Titration of Valine by a Strong Base,for Example NaOH,reveals Two $\rightarrow$

question 42

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.

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