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Chemical equilibria in ferrous chloride acid solution

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Abstract

Ionic equilibria of ferrous chloride solutions were analyzed by considering chemical equilibria, mass, and charge balance equations. The activity coefficients of solutes and water activity were calculated with the Bromley equation. The equilibrium constants for the formation of Fe(II) complexes were determined from the reported thermodynamic data. The effects of HCl and FeCl2 concentration on the distribution of Fe(II) species and on the activity of HCl were estimated by applying ionic equilibria. The solvent extraction behavior of FeCl2 with Alamine 336 was explained with the distribution of Fe(II) species. The predicted pH values for FeCl2-HCl-H2O system agreed well with those experimentally measured at 25°C.

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  1. Department of Advanced Materials Science & Engineering, Mokpo National University, 61 Dorim-ri, Cheonggye-myeon, Muan-gun, 534-729, Jeonnam, Korea

    Man-Seung Lee

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  1. Man-Seung Lee
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Correspondence to Man-Seung Lee.

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Lee, MS. Chemical equilibria in ferrous chloride acid solution. Met. Mater. Int. 10, 387–392 (2004). https://doi.org/10.1007/BF03185990

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