35.
The α-carboxylic acid group of Glycine amino acid has pK value of 2.35 while for its α- amino group pK is 9.78. identify, which species of glycine would predominate at pH below 2.35;
A:
+H3NCH2COO-
B:
H2NCH2COOH
C:
H2NCH2COO-
D:
+H3NCH2COOH
The answer is:
D