Dissociation Field Effect of MgS04 Ion-Pair Hydrates

  • Eberhard Neumann
  • Dieter Schallreuter
Conference paper


The electrostatic interactions between the ions of divalent and oligovalent electrolytes give rise to the formation of ion-pairs and higher ionic associations in addition to ion atmospheres. In salts like MgS04 ultrasonic relaxation measurements have revealed that the ion-pairs are discrete species rather than diffuse Bjerrum- type associates of continuous distances between the charge centers (Eigen 1957; Eigen, Tamm 1962; Bechtler, Breitschwerdt, Tamm 1970). The dipolar character of thr ion-pairs leads to respective contributions to the dielectric dispersion (pottel 1965).


Dielectric Dispersion Conductivity Relaxation Thermodynamic Equilibrium Constant Type Associate Effective Dipole Moment 
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  1. Bechtler A, Breitschwerdt KG, Tamm K (1970) Ultrasonic relaxation studies in aqueous solutions of 2–2 electrolytes. J Chem Phys 52: 2975–2982CrossRefGoogle Scholar
  2. Eigen M (1957) Determination of general and specific ionic interactions in solution. Discussions Faraday Soc 24: 25–36CrossRefGoogle Scholar
  3. Eigen M, Tamm K (1962) Schallabsorption in Elektrolytlösungen als Folge chemischer Relaxation. Z Elektrochem 66: 93–121Google Scholar
  4. Neumann E (1986) Chemical electric field effects in biological macromolecules. Prog Biophys molec Biol 47: 197–231CrossRefGoogle Scholar
  5. Onsager L (1934) Deviations from Ohm’s law in weak electrolytes. J Chem Phys 2: 599 - 615CrossRefGoogle Scholar
  6. Pottel R (1965) Die komplexe Dielektrizitätskonstante wäBriger Lösungen einiger 2-2- wertiger Elektrolyte im Frequenzbereich 0,1 bis 38 GHz. Ber Bunsenges Phys Chem 69: 363 - 378Google Scholar
  7. Schallreuter D (1982) Thesis, University of KonstanzGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • Eberhard Neumann
    • 1
  • Dieter Schallreuter
    • 1
  1. 1.Faculty of ChemistryUniversity of BielefeldBielefeld 1Germany

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