The solubility properties of ZnCl\-2/ZnAc\-2/ZnSO\-4MetH\-2O systems at 25℃ in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc\-2 and ZnSO\-4 systems ar...The solubility properties of ZnCl\-2/ZnAc\-2/ZnSO\-4MetH\-2O systems at 25℃ in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc\-2 and ZnSO\-4 systems are both simple systems, which do not exist any compound; there are 2 complexes formed in ZnCl\-2 system: Zn（Met）Cl\-2 and Zn（Met）\-2Cl\-2·2H\-2O. Under the direction of phase equilibrium result, 2 solid complexes have been prepared in water and characterized by chemical analysis, IR, Xray diffraction. Their combustion energies have also been determined by means of a RBCtype1 rotatingbomb calorimeter, and their standard enthalpies of formation, Δ f, coor（s）H O-, have been calculated which are （-828.32±3.00） kJ·mol -1 and （-1 117.08±6.15） kJ·mol -1, respectively.展开更多
文摘The solubility properties of ZnCl\-2/ZnAc\-2/ZnSO\-4MetH\-2O systems at 25℃ in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc\-2 and ZnSO\-4 systems are both simple systems, which do not exist any compound; there are 2 complexes formed in ZnCl\-2 system: Zn（Met）Cl\-2 and Zn（Met）\-2Cl\-2·2H\-2O. Under the direction of phase equilibrium result, 2 solid complexes have been prepared in water and characterized by chemical analysis, IR, Xray diffraction. Their combustion energies have also been determined by means of a RBCtype1 rotatingbomb calorimeter, and their standard enthalpies of formation, Δ f, coor（s）H O-, have been calculated which are （-828.32±3.00） kJ·mol -1 and （-1 117.08±6.15） kJ·mol -1, respectively.
