Solubilization of paraffin gases in aqueous solutions of sodium octanoate

A. Ben Naim*, J. Wilf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The solubilities of methane, ethane, propane and n-butane were measured in aqueous solutions of sodium octanoate of molar concentrations between 0-0.8M. From these measurements we have computed the standard free energies, entropies and enthalpies for the process of transferring the solute molecules from the gaseous phase into the solutions. We found that propane and n-butane behave as expected at, and beyond, the cmc, namely the solubility takes a steep turn upwards. On the other hand, methane and ethane seem to cross the cmc with almost no change in their solubility. A tentative interpretation of this behavior is suggested, based on the competing effects of salting out and solubilization.

Original languageEnglish
Pages (from-to)671-683
Number of pages13
JournalJournal of Solution Chemistry
Volume12
Issue number9
DOIs
StatePublished - Sep 1983

Keywords

  • ethane
  • methane
  • micelles
  • n-butane
  • propane
  • sodium octanoate
  • solubility of gases
  • Solubilization
  • thermodynamics of solution

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