Thermodynamic Study of Zn(II)-Glycinamide Complex Formation by Spectrophotometric Method in Various Temperatures and pH = 4, Ionic Strength = 0.1 mol L~(-1)

摘要

The formation constants of Zn(TI)-glycinamide system were determined in buffer solution, pH = 4.0 (I = 0.1 mol L~(-1) inNaClO4 at 10, 15, 20,25,30 °C) using UV-Visible spectrophotometric method. The optical absorption spectra of Zn(II)-glycinamide system were analyzed in order to obtain formation constants and stoichiometrics based on SQUAD software. Determining the formation constants at various temperatures enabled us to calculate some thermodynamic parameters as K, ΔG°, ΔH° and ΔS° related to the considered complexes.