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Thermodynamics of solute transfer between chloroform and water

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Abstract

The apparent enthalpies, free energies and entropies of transfer from water saturated chloroform to chloroform saturated aqueous buffer (pH 7) were determined for five primary alcohols and six other organic nonelectrolytes using an isoperibol flow microcalorimeter. A linear relationship between the enthalpies and free energies of transfer is found for the homologous series of alcohols indicating that the occurrence of enthalpy-entropy compensation in solute transfer is not restricted to solvent systems of low mutual solubility. The apparent thermodynamics of transfer from chloroform to aqueous buffer were compared with those from 2,2,4-trimethylpentane to aqueous buffer and were rationalized in terms of solvation interactions.

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Correspondence to W. Riebesehl.

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Riebesehl, W., Tomlinson, E. & Niemel, P.R. Thermodynamics of solute transfer between chloroform and water. J Solution Chem 14, 699–707 (1985). https://doi.org/10.1007/BF00647686

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Key words

  • Thermodynamics of transfer
  • chloroform
  • aqueous solution
  • mutually saturated
  • alcohols
  • benzene derivatives
  • enthalpy-entropy compensation