if-the-ph-of-a-solution-is-8-what-is-the-predominant-form-of-the-amino-group-in-

Question

If the pH of a solution is 8, what is the predominant form of the amino group in an amino acid with a pKa of 9?

Accepted Answer

Protonated (NH3+)

Answer

Neutral (NH)

Answer

Deprotonated (NH2)

Answer

Doubly protonated (NH4+)