Physicochemical properties of eutonic aqueous solutions of zinc and copper tetraammoniates in the range 293–323 K

The density, viscosity, surface tension, and conductivity of subeutonic and eutonic solutions in the CuO-ZnO-NH₃-NH₄Cl-H₂O system at ammonia concentrations in the range 1.16–13.36 mol/l are determined experimentally in the temperature range 293–323 K. The expansion coefficient, the activation energy of viscous flow, the parachor, the orthochor, the degree of dissociation, and the equilibrium constant are calculated.