Intradiffusion coefficients for iron and water and shear viscosities in aqueous iron(II) perchlorate solutions at 25C

Authors

William E. Price, University of WollongongFollow
Lawrence A. Woolf, University Of New South Wales

RIS ID

67605

Publication Details

Price, W. E. & Woolf, L. A. (1992). Intradiffusion coefficients for iron and water and shear viscosities in aqueous iron(II) perchlorate solutions at 25C. Journal of Solution Chemistry, 21 (3), 239-248.

Abstract

Intradiffusion coefficients of iron(II) and water were determined in acidified solutions of iron(II) perchlorate for an iron concentration range of 0 to 2.5 mol-dm-3 at 25C. In addition ancillary shear viscosity and density data were measured for each solution. Results were compared with existing diffusion data for iron(III) perchlorate solutions and highlighted the differences in the solvent dynamics around the two metal ions. By use of a simple model the effective hydration of the iron(II) ion was estimated to be 12, comparable to that of other divalent, uncomplexed metal cations; the same model indicates an effective hydration of 19 for iron(III).