Thermodynamic Properties of the Aqueous Ions (2+ and 3+) of Iron and the Key Compounds of Iron

Autor:	I. L. Khodakovskii, V. B. Parker
Rok vydání:	1995
Předmět:	Goethite Aqueous solution Chemistry Enthalpy Inorganic chemistry Computer based General Physics and Astronomy General Chemistry Ion Gibbs free energy symbols.namesake Property value visual_art visual_art.visual_art_medium symbols Physical chemistry Physical and Theoretical Chemistry
Zdroj:	Journal of Physical and Chemical Reference Data. 24:1699-1745
ISSN:	1529-7845 0047-2689
DOI:	10.1063/1.555964
Popis:	Recommended thermochemical property values, ΔfH°, ΔfG°, and S° for the aqueous ions of iron, Fe2+ and Fe3+, are given at 298.15 K in SI units. They are consistent with the CODATA Key Values for Thermodynamics. The values are: ΔfH°=−90.0±0.5 kJ⋅mol−1, ΔfG°=−90.53±1.0 kJ⋅mol−1, S°=−101.6±3.7 J⋅mol−1⋅K−1 for Fe2+(ao) and ΔfH°=−49.0±1.5 kJ⋅mol−1, ΔfG°=−16.28±1.1 kJ⋅mol−1, S° =−278.4±7.7 J⋅mol−1⋅K−1 for Fe3+(ao). The evaluation involves the analysis of the enthalpy changes, Gibbs energy changes, and the entropy measurements for all key substances in the key network. A consistent set of thermochemical property values is given for FeOOH(cr, Goethite), FeCl2(cr), FeCl3(cr), FeBr2(cr), FeBr3(cr), FeI2(cr), and FeSO4⋅7H2O(cr), as well as ‘‘reconstituted’’ recommended process values with uncertainties involving these substances. All recommended values are also given for a standard state of p°=1 atm. A computer based reaction catalog of measurements accompanies the text analysis.
Databáze:	OpenAIRE
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