DOI: 10.1002/bbpc.19920960807. Dielectric relaxation of aqueous electrolyte solutions. I. Solvent relaxation of 1:2, 2:1, and 2:2 electrolyte solutions

Dielectric relaxation of aqueous electrolyte solutions. I. Solvent relaxation of 1:2, 2:1, and 2:2 electrolyte solutions

10.1002/bbpc.19920960807

Crossref journal-article

Wiley

Berichte der Bunsengesellschaft für physikalische Chemie (311)

Abstract

AbstractComplex permittivity measurements on aqueous solutions of CdCl2, CuCl2, MgSO4, CdSO4, Na2SO4, Cd(ClO4)2, and MgCl2in the frequency range from 0.9 to 90 GHz are reported. The data analysis reveals the superposition of 2 Debye dispersion steps for the solvent thus supporting multi‐step relaxation mechanisms discussed for water in the literature. An additional low frequency process is found for CdCl2, CuCl2, MgSO4, CdSO4, and Na2SO4solutions due to solute relaxation, but not for Cd(ClO4)2and MgCl2solutions. – The decrease of the static solvent permittivity at increasing electrolyte concentrations is interpreted in terms of irrotational bonding and kinetic depolarization and is used to determine effective solvation numbers. The dependence of the main (low frequency) relaxation time of water on electrolyte concentration is explained with the help of the reorientation and residence times of water in the hydration spheres of ions and in the bulk. The high frequency relaxation time is approximately concentration independent, whereas the dispersion amplitude of the process increases with electrolyte concentration.

Bibliography

Barthel, J., Hetzenauer, H., & Buchner, R. (1992). Dielectric relaxation of aqueous electrolyte solutions. I. Solvent relaxation of 1:2, 2:1, and 2:2 electrolyte solutions. Berichte Der Bunsengesellschaft FÃ¼r Physikalische Chemie, 96(8), 988â997. Portico.

Authors 3

J. Barthel (first)
H. Hetzenauer (additional)
R. Buchner (additional)

References 60 Referenced 43

{'key': 'e_1_2_1_2_2', 'volume-title': 'Theory of Electric Polarization', 'author': 'Böttcher C. F. J.', 'year': '1978'} / Theory of Electric Polarization by Böttcher C. F. J. (1978)
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Dates

Type	When
Created	11 years, 5 months ago (March 18, 2014, 9:38 p.m.)
Deposited	1 year, 3 months ago (May 24, 2024, 11:56 p.m.)
Indexed	2 months ago (July 4, 2025, 9:04 a.m.)
Issued	33 years, 1 month ago (Aug. 1, 1992)
Published	33 years, 1 month ago (Aug. 1, 1992)
Published Online	11 years, 5 months ago (March 18, 2014)
Published Print	33 years, 1 month ago (Aug. 1, 1992)

Funders 0

None

BibTeX

@article{Barthel_1992, title={Dielectric relaxation of aqueous electrolyte solutions. I. Solvent relaxation of 1:2, 2:1, and 2:2 electrolyte solutions}, volume={96}, ISSN={0005-9021}, url={http://dx.doi.org/10.1002/bbpc.19920960807}, DOI={10.1002/bbpc.19920960807}, number={8}, journal={Berichte der Bunsengesellschaft für physikalische Chemie}, publisher={Wiley}, author={Barthel, J. and Hetzenauer, H. and Buchner, R.}, year={1992}, month=aug, pages={988–997} }

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  },
  "references-count": 60,
  "journal-issue": {
    "issue": "8",
    "published-print": {
      "date-parts": [
        [
          1992,
          8
        ]
      ]
    }
  },
  "alternative-id": [
    "10.1002/bbpc.19920960807"
  ],
  "URL": "http://dx.doi.org/10.1002/bbpc.19920960807",
  "relation": {},
  "ISSN": [
    "0005-9021",
    "0005-9021"
  ],
  "subject": [],
  "container-title-short": "Ber Bunsenges Phys Chem",
  "published": {
    "date-parts": [
      [
        1992,
        8
      ]
    ]
  }
}