For the alanine titration curve shown below,which best describes point A? A) a buffer region B) isoelectric point C) second equivalence point D) pH = pK_a

Question

Quizplus · Accepted Answer

Point A on the alanine titration curve represents the isoelectric point where the net charge on the molecule is zero. At this point, the acidic and basic groups on the molecule are protonated and deprotonated, respectively, resulting in an equal number of positive and negative charges. This makes alanine electrically neutral and it will not move in an electric field.

For the Alanine Titration Curve Shown Below,which Best Describes Point