Glycine hydrochloride (Cl-H3N+ CH2 COOH) is a diprotic acid that contains a carboxylic acid group and an ammonium group and is therefore called an amino acid. It is often used in biochemical buffers.
(a) Which proton would you expect to dissociate at a lower pH, the proton of the carboxylic acid group or the ammonium group?
(b) Write the chemical equations describing the dissociation of the first and second protons of Cl- H3N+ CH2COOH.