At what pH would you expect valine, an amino acid with a neutral R group, to be in the zwitterionic form?

Name: At what pH would you expect valine, an amino acid with a neutral R group, to be in the zwitterionic form?
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Question

Quizplus · Accepted Answer

Valine has a pKa of 2.3 for its carboxylic acid group and a pKa of 9.6 for its amino group. At a pH of 7, both the carboxylic acid group and the amino group are protonated and deprotonated, respectively, resulting in the zwitterionic form of valine.

At What PH Would You Expect Valine, an Amino Acid