The solubility of SnO2(cassiterite) was studied at 23 ? 2?C as functions of time (7 – 49 days) and pH value (0-14.5). Steady state concentrations were reached in 0.003 mol.dm-3) and transforms to a double salt of SnO2 and NaOH. Although additional well-focused studies will be required for confirmation, the experimental data in the highly alkaline region (0.003 to 3.5 mol.dm-3 NaOH) can be well described with log10 K0 of -5.29 ± 0.35 for the reaction (Na2Sn(OH)6(s) = Na2Sn(OH)6(aq)).
Revised: August 3, 2011 |
Published: August 1, 2011
Citation
Rai D., M. Yui, H.T. Schaef, and A. Kitamura. 2011.Thermodynamic Model for SnO2(cr) and SnO2(am) Solubility in the Aqueous Na+-H+ -OH- -Cl- -H2O System.Journal of Solution Chemistry 40, no. 7:1155-1172.PNNL-SA-76900.doi:10.1007/s10953-011-9723-1