A critical evaluation of the thermodynamic data for boron ions,ion pairs,complexes, and polyanions in aqueous solution at 298.15 K and 1 bar |
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| Authors: | RL Bassett |
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| Institution: | U.S. Geological Survey, Denver, CO 80225, U.S.A. |
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| Abstract: | Energy related industrial development, municipal waste treatment processes and some natural sources, contribute to B (being present) in the environment in elevated concentrations. Boron forms numerous aqueous ion pairs and complexes, some of which would not normally exist in significant concentrations under typical baseline environmental conditions. A complete understanding of the aqueous chemistry of B depends on an accurate evaluation of the thermodynamic data for these species.Equilibrium constants for 29 inorganic complexes, ion pairs, and polyanions of B have been critically evaluated. Apparent equilibrium constants have been extrapolated to zero ionic strength, and the selected thermodynamic values are tabulated. Gibbs free energies of formation for the aqueous species have been computed; these are presented with entropy and enthalpy values where available |
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