The processes of glycine ionization (Gly) have been studied by potentiometry and the values of pKa1 and pKa2 at 288.15 K, the ionic strength of the solution (Na(H)CIO4) have been calculated) 0.1, 0.25, 0.5, 0.75, 1.0 mol/l and concentrations 1.0÷3.0 · 10-3 mol/l with a confidence probability of P = 0.95.
With an increase in ionic strength and temperature, the pK of both amino and carboxyl groups and functional groups of the side radical decreases, which indicates an increase in the degree of their ionization and is consistent with the theory of weak electrolytes.