Prepare a titration plot for the amino acid titration. From the graph determine whether your acid is mono-, di-, or triprotic, determine its pK, value(s), and its formula weight. Use dashed lines on the plot to indicate all endpoints and pKa values. Identify the amino acid on the basis of your data and the information given in Table 1. Name Aspartic Acid Cysteine HCI Glutamic Acid Glutamic Acid HCI Glycine HCI Histidine Table 1 Possible amino acids Formula Weight 133.1 176.6 147.0 183.6 111.5 155.2 pKa 3.9, 9.8 1.7, 8.3, 10.8 4.3, 9.7 2.2, 4.25, 9.67 2.3, 9.6 9.2 Since some of the acids do not give sharp endpoints and since the acids may not be completely pure, the experimental formula weight value may differ from the correct value by as much as 2%. The experimental pK values may differ from those reported in Table 1 by 0.2 pK units (or more for values under 3.0). Report the identity of your unknown and its formula weight.