Data 11, Suppl. The values are calculated from U.S.N.B.S. tables of molar thermodynamic properties unless in italics. Solubility products are the equilibrium constants for the formation of solutions of the constituent ions of a slightly soluble salt from the pure solid salt. Stability constants are the equilibrium constants for the formation of the complex ion from its constituent simpler ions. The thermal coefficient is that of the isothermal cell in which one of the electrodes is the standard hydrogen electrode.
Ions are all aqueous.
Elements and compounds are pure substances, present in their usual state at 25oC, unless otherwise indicated. The saturated calomel reference potential is the experimental value for pure mercury in contact with an aqueous solution saturated with both Hg2Cl2 and KCl. Combined with oxygen and hydrogen, it forms bauxite, the ore most commonly mined for aluminium. Metallic aluminium was first isolated in 1829 from aluminium chloride, but it was not commercially produced until 1886. It is a good conductor of electricity and is very resistant to atmospheric corrosion.