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Determination of the hydration numbers of molecules and ions from the overtone bands in the IR spectrum of water

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Measurement has been made of the variation of the optical densities of the water overtone absorption bands with the concentration of water in aqueous solutions of acids and salts.

  2. 2.

    Deviations from Beer's law have been used to calculate values of nυ defined as the ratio of the difference of the analytical and measured concentrations of water to the concentrations of the dissolved compound.

  3. 3.

    Analysis of our own data and those of the literature indicated that the nυ value is often identical with the hydration number of hydrogen or hydroxide ions in strong aqueous solutions of acids and bases.

  4. 4.

    In general, there is no correlation between nυ values and hydration numbers in aqueous salt solutions.

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Authors and Affiliations

  1. Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow

    N. B. Librovich, V. D. Maiorov & M. I. Vinnik

Authors
  1. N. B. Librovich
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  2. V. D. Maiorov
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  3. M. I. Vinnik
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1255–1258, June, 1977.

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Librovich, N.B., Maiorov, V.D. & Vinnik, M.I. Determination of the hydration numbers of molecules and ions from the overtone bands in the IR spectrum of water. Russ Chem Bull 26, 1152–1156 (1977). https://doi.org/10.1007/BF01143891

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  • DOI: https://doi.org/10.1007/BF01143891

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