QuestionAt which point in the titration curve is alanine a positive ion and when is it a zwitterion? What pH equals the pKa of alanine's amino group?
Studdy Solution
The pKa of the amino group of Alanine is typically around9.69. Therefore, the pH at which Alanine's amino group is in equilibrium (half protonated, half deprotonated) is9.69.
Alanine is present predominately as a positively ion species at the start of the titration curve. Alanine is a zwitterion at its isoelectric point (p). The pH that is equal to the pKa of the amino group of Alanine is9.69.
View Full Solution - FreeWas this helpful?