November 2025

It is customary to discuss the phase formation in systems with an aqueous phase on the basis of a so-called Pourbaix diagrams. These represent at constant temperature, usually 25°C, the regions of precipitation respectively solubility of a metallic component respectively its oxides or hydroxides for a particular molality as a function of Eh, the potential […]

Now let’s see how the option “aqueous diagram with molalities and iso-Eh & iso-ph lines” works. Figure 6 shows the Components screen for this option. Note that the order of the components is the same as for the “classical phase diagram”. With the same choice of the phases as above we now obtain a different