draw-the-predominant-structure-of-an-amino-acid-at-a-ph-of-9-given-its-pka-value

Question

Draw the predominant structure of an amino acid at a pH of 9, given its pKa values are 2.0 and 9.0.

Accepted Answer

The carboxyl group is deprotonated, and the amino group is half-protonated.

Answer

The carboxyl group is protonated, and the amino group is deprotonated.

Answer

Both the carboxyl and amino groups are protonated.

Answer

Both the carboxyl and amino groups are deprotonated.