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Unless otherwise stated this page contains Version 1.0 content (Read more about versions) 3.9.8 Solubility products in aqueous solutionsThe equilibrium between a solid and its aqueous solution is rarely as simple as
with the solubility product (Ks0) of a salt defined as [M]a[X]b since the solid has constant activity (charges on the ions have been ignored). The value of Ks0 does not give any information about other possible equilibria (side reactions) such as formation of higher complexes and pH effects when basic anions or acidic cations are involved. It is also necessary to know the nature of the precipitated phase. Many published data relate to poorly characterised solid phases. Selection of values from discrepant literature can be quite arbitrary. Most of the following values of pKs0 = −log Ks0 relate to 298 K and zero ionic strength; others may be found in Sillen and Martell (1964) and the extensive series of IUPAC Solubility Data compilations. Reference L. G. Sillen and A. E. Martell (1964) Stability
Constants of Metal Ligand Complexes, Sp. Publ. 17, The Chemical
A.K. Covington |
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