Journal of Solution Chemistry

, Volume 11, Issue 1, pp 55–62 | Cite as

Conductances of some electrolytes in 2-methylpyridine-N-oxide at 55°C

  • Jerry F. Casteel
  • Robert J. Lemire
  • Paul G. Sears


Conductance measurements for fifteen uni-univalent salts in 2-methylpyridine-N-oxide (2-MPO) were made over the concentration range of 2−120×10−4 mol-dm−3 at 55°C. All conductance data were evaluated by the Lee-Wheaton equation. The results indicate that all of the salts studied are slightly associated in 2-MPO, which is, nevertheless, a reasonably good ionizing solvent compared to other solvents having a similar value for the dielectric constant. The tetraalkylammonium halides are weaker electrolytes than the tetraphenylborate salts in 2-MPO. Ionic limiting molar conductances were obtained by using as a reference electrolyte tris(iso-pentyl)butylammonium tetraphenylborate. Anions appear to be poorly solvated in this solvent but certain cations, particularly Na+ and K+, show evidence of specific ion-solvent interaction.

Key words

2-methylpyridine-N-oxide electrolytic conductance ionic conductance tetraalkylammonium ions alkali metal ions bromides iodides tetraphenylborates 


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Copyright information

© Plenum Publishing Corporation 1982

Authors and Affiliations

  • Jerry F. Casteel
    • 1
  • Robert J. Lemire
    • 2
  • Paul G. Sears
    • 3
  1. 1.Cities Services CompanyTulsa
  2. 2.Atomic Energy of Canada LimitedWhiteshell Nuclear Research EstablishmentPinawaCanada
  3. 3.Department of ChemistryUniversity of KentuckyLexington

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