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Journal of Solution Chemistry

, Volume 6, Issue 8, pp 541–558 | Cite as

Ion association and ultrasonic relaxation study of tetraalkylammonium and bis-tetraalkylammonium electrolytes in 2-propanol as a function of temperature and concentration

  • R. E. Verrall
  • H. Nomura
Article

Abstract

Ultrasonic absorption data obtained over the frequency range 5–95 MHz by the pulse method are reported for tetraethylammonium bromide, 1,5-bis-(triethylammonium) pentane dibromide and 1,10-bis(triethylammonium) decane dibromide in 2-propanol in the temperature range 0–25°C. A single relaxation curve is observed under all experimental conditions. The relaxation frequencies depend linearly on the salt concentrations. The excess absorption of these three salts in 2-propanol is mainly attributed to an ion association process. The thermodynamic and kinetic parameters of (Et) 4 NBr in 2-propanol were obtained from the ultrasonic data and previously published conductance data. The difference between the behavior of Et 4 NBr and the bolaform salts is discussed.

Key words

Ultrasonic absorption tetraethylammonium bromide 1,5-bis(triethylammonium)pentane dibromide 1,10-bis(triethylammonium)-decane dibromide relaxation ion association thermodynamic and kinetic parameters volume relaxation 

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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • R. E. Verrall
    • 1
  • H. Nomura
    • 2
  1. 1.Department of Chemistry and Chemical EngineeringUniversity of SaskatchewanCanada
  2. 2.Department of Chemical EngineeringNagoya UniversityNagoyaJapan

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