Complicated equilibria in the Pb(II)-H2O-OH- system

The regions of existence of various lead(II)-containing compounds both in s olutions and as precipitates were studied over a wide range of the pH value s of aqueous solutions at temperatures from 20 to 65 degrees C. The data ob tained were used for the development of a model of equilibria in metal ion- water-ligand systems, which provides a better understanding of the phenomen a observed in this work and described in the literature, and also makes it possible to calculate the equilibrium constants without significant systema tic errors.