The solubility of gases in liquids

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7 Scopus citations


The solubility of gases in liquids is analyzed in terms of the displacements theory, in particular the case where increasing solubility of gases is observed for rising temperature at room pressures. Heat effects are characterized for diluted binary mixtures and geometrical characteristics of phase envelopes (isopleths) are established. It is shown that gases which show increasing solubilities with temperature dissolve in heavy liquids by an endothermic process in the diluted range. A general approach, based on the analysis of critical lines and isopleths, is developed for all pressures and concentrations It is demonstrated that increasing solubility will be observed if the isopleth of a liquid phase shows a nonmonotonous behavior. Conclusions and examples are illustrated using well-established cubic equations of state.

Original languageEnglish
Pages (from-to)125-153
Number of pages29
JournalPhysics and Chemistry of Liquids
Issue number3
StatePublished - 1 Jan 1997


  • Azeotropy
  • Critical lines
  • Equations of state
  • Phase envelopes
  • Solubility of gases

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Materials Chemistry


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