Determination of goslarite-bianchite equilibria by the humidity-buffer technique at 0.1 MPa
Chemical Geology
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Abstract
Goslarite-bianchite equilibria were determined along four humidity-buffer curves at 0.1 MPa and between 27 and 36 ??C. Results, based on tight reversals along each humidity buffer, can be represented by ln K (??0.005)=19.643-7015.38/T, where K is the equilibrium constant and T is temperature in K. Our data are in excellent agreement with several previous vapor-pressure measurements and are consistent with the solubility data reported in the literature. Thermodynamic analysis of these data yields 9.634 (??0.056) kJ mol-1 for the standard Gibbs free energy of reaction, which is in good agreement with the value of 9.658 kJ mol-1 calculated from the thermodynamic data compiled and evaluated by Wagman et al. [Wagman, D.D., Evans, W.H., Parker, V.B., Schumm, R.H., Halow. I., Bailey, S.M., Churney, K.L., Nuttal, R.L., 1982. The NBS tables of chemical thermodynamic properties. Selected values for inorganic and C1 and C2 organic substances in SI units. J. Phys. Chem. Ref. Data 11, Suppl. 2].
Suggested Citation
Chou, I., and Seal, R., 2005, Determination of goslarite-bianchite equilibria by the humidity-buffer technique at 0.1 MPa: Chemical Geology, v. 215, no. 1-4 SPEC. ISS., p. 517-523, https://doi.org/10.1016/j.chemgeo.2004.06.047.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of goslarite-bianchite equilibria by the humidity-buffer technique at 0.1 MPa |
| Series title | Chemical Geology |
| DOI | 10.1016/j.chemgeo.2004.06.047 |
| Volume | 215 |
| Issue | 1-4 SPEC. ISS. |
| Year Published | 2005 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Chemical Geology |
| First page | 517 |
| Last page | 523 |