Determination of the degree of dissociation of a congruently melting compound by the method of isomorphous cocrystallization

  • V. R. Klokman
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Summary

  1. 1.

    The crystallization coefficient in the systems KCaCl3-RbCaCl3-KCl and KCaCl3-RbCaCl3-CaCl2 at a given temperature and melt composition remains a constant value regardless of the amount of solid phase separated and tins proves the existence of isomorphism between KCaCl3 and RbCaCl3.

     
  2. 2.

    By extrapolation we determined the crystallization coefficient of RbCaCl3 when it was distributed between KCaCl3 crystals and melt at the melting point of the former and without solvent,

     
  3. 3.

    From the character of the changes in the temperature dependence of the crystallization coefficient we put forward the hypothesis that the degrees of dissociation of KCaCl3 in the systems KCl-KCaCl3 and CaCl2-KCaCl3 were different and depended on the nature of the second component in the system.

     
  4. 4.

    We calculated the degree of dissociation of KCaCl3 at various temperatures in the systems KC1-KCaCl3 and CaCl2-KCaCl3.

     

Keywords

Crystallization Melting Point Melting Compound Crystallization Coefficient Isomorphous Cocrystallization 

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Literature cited

  1. [1]
    N.S. Kurnakov and S.F. Zhemchuzhnyi, Zhur. Russ. Khim. Obshchestvo 44, 1964 (1912).Google Scholar
  2. [2]
    A.B. Mlodzeevskii, Izvest. Inst. Fiz. -Khim. Analiza 6, 5 (1933).Google Scholar
  3. [3]
    O.E. Esin, Izvest. Sekt. Fiz.-Khim. Analiza 19, 151 (1940).Google Scholar
  4. [4]
    O. E. Esin, Zhur. Fiz. Khim. 21, 4, 479 (1947).Google Scholar
  5. [5]
    V.Ya. Anosov and N.N. Patsukova, Zhur. Neorg. Khim. 1, 6, 1223 (1956).Google Scholar
  6. [6]
    R. Kremann, Monatsh. Chem. 25, 1215 (1904).Google Scholar
  7. [7]
    J. Kendall and J.E. Booge, J. Chem. Soc. 127, 1768 (1925).Google Scholar
  8. [8]
    V.G. Khlopin, Selected Works [in Russian] Vol. l (Acad. Sci. USSR Press, Moscow-Leningrad, 1957).Google Scholar
  9. [9]
    V.G. Khlopin and A.P. Ratner, Doklady Akad. Nauk SSSR 27, 723 (1930).Google Scholar
  10. [10]
    A.P. Ratner, J. Chem. Phys. 1, 789(1933).Google Scholar
  11. [11]
    V.G. Khlopin and V.R. Klokman, Izvest Akad. Nauk SSSR, Otdel. Khim. Nauk 3, 254 (1949); V.G. Khlopin, V.R. Klokman and E.G. Pekel'naya, Izvest. Akad. Nauk, Otdel. Khim. Nauk 2, 250 (1953); V.R. Klokman, A.A. Mel'nikova and N.I. Uryupina, Izvest. Akad. Nauk SSSR, Otdel. Khim. Nauk 6, 953 (1954); V.R. Klokman, V.K. Zinov'eva and I.A. Tseveleva, Izvest. Akad. Nauk SSSR, Otdel. Khim. Nauk 5, 800 (1955).Google Scholar
  12. [12]
    V.G. Khlopin, V.R. Klokman, A.N. Murin and V.D. Nefedov, Izvest. Akad. Nauk SSSR, Otdel. Khim. Nauk 12, 127 (1950).Google Scholar
  13. [13]
    V.R. Klokman, Zhur. Neorg. Khim. 3, 1, 33 (1958).Google Scholar
  14. [14]
    V.R. Klokman, V.A. Polyakov and A.A. Mel'nikova, Trans. Conference on the Use of Labeled Atams in Scientific Investigations and in Agriculture [in Russian] (Acad. Sci. USSR Press, Moscow, 1958).Google Scholar
  15. [15]
    E.P. Dergunov and A.G. Bergman, Doklady Akad. Nauk SSSR 75, 6, 815 (1950).Google Scholar
  16. [16]
    V.G. Khlopin and V.R. Klokman, Izvest. Akad. Nauk SSSR, Otdel. Khim. Nauk 3, 254 (1949).Google Scholar

Copyright information

© Consultants Bureau Enterprises, Inc 1960

Authors and Affiliations

  • V. R. Klokman
    • 1
  1. 1.V.G. Khlopin Radium InstituteAcademy of SciencesUSSR

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