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Pourbaix diagram of iron. [1] The Y axis corresponds to voltage potential. In electrochemistry, and more generally in solution chemistry, a Pourbaix diagram, also known as a potential/pH diagram, E H –pH diagram or a pE/pH diagram, is a plot of possible thermodynamically stable phases (i.e., at chemical equilibrium) of an aqueous electrochemical system.
Pourbaix diagram for water, including stability regions for water, oxygen and hydrogen at standard temperature and pressure (STP). The vertical scale (ordinate) is the electrode potential relative to a SHE electrode. The horizontal scale (abscissa) is the pH of the electrolyte (otherwise non-interacting). Above the top line oxygen will bubble ...
Pourbaix diagram for gold in simple non-complexing aqueous solutions (anions other than OH-not considered). Ion concentration 0.001 m (mol/kg water). Temperature 25°C. Date: 24 October 2007: Source: Self-made, with data from software FactSage 5.3: Author: Metallos
Pourbaix diagram for water, including equilibrium regions for water, oxygen and hydrogen at STP. The vertical scale is the electrode potential of hydrogen or non-interacting electrode relative to an SHE electrode, the horizontal scale is the pH of the electrolyte (otherwise non-interacting).
Pourbaix diagram for copper in uncomplexed media (anions not other than OH - considered). Ion concentration 0.001 m (mol/kg water). Ion concentration 0.001 m (mol/kg water). Temperature 25°C.
The simplified entries in the reaction column can be read in detail from the Pourbaix diagrams of the considered element in water. Noble metals have large positive potentials; [24] elements not in this table have a negative standard potential or are not metals.
Unlike traditional cocktails made that use a spirit as a base, most nonalcoholic drinks are water-based or contain a high quantity of water through ingredients like fruit juices or teas.
Español: Diagrama de Pourbaix del vanadio. English: Pourbaix diagram of vanadium. Date: 22 September 2007 (original upload date) Vectorized 2013-10-12 15:15:48: Source: