Critical evaluation and selection of standard state thermodynamic properties for chromium metal and its aqueous ions, hydrolysis species, oxides, and hydroxides
Journal Article
·
· Journal of Chemical and Engineering Data
- Univ. of Arizona, Tucson, AZ (United States). Dept. of Hydrology and Water Resources
- Geological Survey, Boulder, CO (United States). Water Resources Div.
This review critically evaluates the reported thermodynamic data on chromium metal, oxides, hydroxides, free aqueous ions, and hydrolysis species. Several discrepancies and inconsistencies have been uncovered and resolved to improve equilibrium calculations for chemical modeling and related engineering purposes. A revised set of data is derived from evaluation of electrochemical measurements, silver chromate solubility measurements, and auxiliary post-1980 data, reevaluation of earlier data, and reconsideration of the path for the thermodynamic network. The recommended thermodynamic values for Cr{sub (cr)}, Cr{sub (aq)}{sup 2+}, Cr{sub (aq)}{sup 3+}, CrO{sub 4(aq)}{sup 2{minus}}, Cr{sub 2}O{sub 7(aq)}{sup 2{minus}}, Cr{sub 2}O{sub 3(cr)}, CrO{sub 3(cr)}, FeCr{sub 2}O{sub 4(cr)}, CrCl{sub 2(cr)}, CrCl{sub 3(cr)}, and KFe{sub 3}(CrO{sub 4}){sub 2}(OH){sub 6(cr)} at 25 C, 1 bar, and infinite dilution are given. 140 refs.
- OSTI ID:
- 316259
- Journal Information:
- Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 6 Vol. 43; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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