Gallium solubility constant

The stable phase of gallium is GaOOH(s). Although solubility constant data have been acquired for this phase for a considerable period of time, it is only most recently have reliable solubility constant data been reported. The solubility of the phase can be described by reaction (2.13) (M = Ga " ", x = 1). 

Although there has been some confusion about the exact nature of the subsequent steps in the reaction (because of the formation of a complex between aluminum chloride and benzene62), it now seems probable that such complexes play no important part in the Friedel-Crafts reaction. By employing gallium trichloride (which is soluble in carbon disulfide solution), it has been possible to determine the equilibrium constant for the reaction ... 

There is a paucity of available data for the solubility of indium oxide and hydroxide phases. As the first hydrolysis constant of indium has a stability that lies between those of aluminium and gallium, it is expected that the solid hydroxide phase would also exhibit this behaviour. However, a number of studies (Heyrovsky, 1925 Oka, 1938 Moeller, 1941 Lacroix, 1949) have indicated a solubility that was larger than that seen for aluminium(III). It is believed that this would be unlikely and, as such, these data are not retained. AkseTrud and Spivakovskii (1959) obtained a solubility that was nearly four orders of magnitude smaller than... 

G.S., Dandurand, J.-L., Schott, J, and Khodakovsky, I.L. (1997) Gallium speci-ation in aqueous solution. Experimental study and modelling part 2. Solubility of of-GaOOH in acidic solutions from 150 to 250 °C and hydrolysis constants of gal-lium(III) to 300 °C. Geochim. Cosmochim. Acta, 61, 1345-1357. 

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