Question- Assume that the pKas of the carboxyl, amino, and side chain protons are the same in the tripeptide( N-terminus aspartic acid, lysine, and valine C-terminus) as they are in the free amino acid species. Starting with the fully protonated tripeptide, determine the magnitude and the sign of the overall charge on tripeptide at
1. pH = 2.0
2. pH = 7.0
3. pH = 12.0
Please demonstrate the entire work. I am thanking you in advance