Pourbaix Diagram for Selenium-Water

Solid substances considered Se (selenium, gray, trigonal). [Pg.64]

H2Se (hydrogen selenide, colorless), HSe (acid telluride ion, colorless), Se (selenide ion, colorless), H2Se03 (selenous acid, colorless), HSeOJ (acid selenite ion, colorless), SeO (selenite ion, colorless), H2Se04 (selenic acid, colorless), HSeOJ (acid selenate ion, colorless), SeO (selenate ion, colorless). [Pg.64]

Limits of the domains of relative predominance of dissolved substances Redox equilibria [Pg.64]

The potential-pH diagram for the system selenium-water at 25 °C is given in Fig. 2.3. This diagram was construeted by using the homogeneous and heterogeneous (solid/liquid, gas/liquid) equilibria listed in the previous page, in which all of the above-referred dissolved substances of selenium (as well as solid Se) participate. [Pg.65]

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