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Correlation between apparent molal volume and osmotic coefficient in aqueous nonelectrolyte solutions

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Abstract

A linear correlation between apparent molal volume and osmotic coefficient in aqueous solution is derived for the multiple association process of solute molecules (purine-like compounds). The same correlation has been empirically fitted also by other solutes (urea and urea derivatives) for which aggregation is a matter of debate or may be ruled out. The relation is briefly discussed in terms of the current view on the physicochemical properties of the solvent water.

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Cesàro, A. Correlation between apparent molal volume and osmotic coefficient in aqueous nonelectrolyte solutions. J Solution Chem 5, 319–323 (1976). https://doi.org/10.1007/BF00647196

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Key words

  • Aqueous nonelectrolyte solutions
  • apparent molar volume
  • osmotic coefficient
  • multiple association