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Activity coefficients of DL-valine in aqueous solutions of KCl at 25°C. Measurement with ion selective electrodes and modelling

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Abstract

Electrochemical cells with two ion selective electrodes, a cation and an anion ion selective electrode, versus a double junction reference electrode were used to measure the activity coefficients of DL-valine at 298.15 K, up to 0.5 molality, in aqueous solutions of KCl up to 1.0 molality. The results obtained in this work are compared with those reported before for the activity coefficients of DL-valine in aqueous solutions of NaCl. The experimental data were correlated using the model proposed previously by Khoshkbarchi and Vera for the activity coefficients of amino acids in aqueous electrolytes solutions.

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Authors and Affiliations

  1. Department of Chemical Engineering, McGill University, H3A 2A7, Montreal, PQ, Canada

    Mohammad K. Khoshkbarchi & Juan H. Vera

Authors
  1. Mohammad K. Khoshkbarchi
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  2. Juan H. Vera
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Khoshkbarchi, M.K., Vera, J.H. Activity coefficients of DL-valine in aqueous solutions of KCl at 25°C. Measurement with ion selective electrodes and modelling. J Solution Chem 25, 865–875 (1996). https://doi.org/10.1007/BF00972578

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  • DOI: https://doi.org/10.1007/BF00972578

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