Question

The structure of glycine in its fully protonated form is shown below. Its first pKa is 2.34, while its second pKA is 9.6. What will be the average net charge on glycine molecules in a solution whose pH is 3.34? Explain your answer fully with a combination of words and equations as appropriate! (That's what's written)

H3N^+-CH2-COOH Glycine

Thanks guys. I missed the review going over this and Im a little anxious as the test is soon. I have the answer it is, 0.091 but the answer key is a little hard to follow. Thanks..

Answer 1

2.34 HO 9.6 AtpH-3.4, glycine amino acid exist in this form. pl -(pkal pka2)12-2.34+9.6) 12-119412 =597 letcharge-+1 (due to presence of +1 charge on nitrogen atom)