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Cryoscopy in Solvents with Dystectic Melting
Proks, I., Daněk, V., Chrenková, M., Šimko, F. and Pánek, Z. Cryoscopy in Solvents with Dystectic Melting Chemical Papers, Vol.56, No. 2, 2002, 71-76
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Author(s) |
Proks, I.
Daněk, V.
Chrenková, M.
Šimko, F.
Pánek, Z.
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| Title |
Cryoscopy in Solvents with Dystectic Melting
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| Journal name |
Chemical Papers
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| Publication date |
2002
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| Year available |
2002
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| Volume number |
56
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| Issue number |
2
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| ISSN |
0366-6352
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| Start page |
71
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| End page |
76
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2002
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| Language |
english
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| Subject |
250000 Chemical Sciences
250200 Inorganic Chemistry
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| Abstract/Summary |
Theoretical derivation of relations valid for cryoscopic measurements in solvents with dystectic mode of melting, i.e. solvents, which undergo at melting a more or less extended thermal dissociation, when chemical reaction between solvent and solute takes place, is presented. When one of the products of this chemical reaction is identical with the product of thermal dissociation of the solvent, the problem of defining the number of “foreign” substances, originating in the reaction between the solvent and the admixture arises. The presented approach shows that the partially dissociated solvent cannot distinguish originating own dissociation products as foreign substances, which made it easier to determine the nature of the probable chemical reaction. The presented approach is applied in the systems Na3AlF6—Al2O3, Na3AlF6—Fe2O3, and Na3AlF6—Al(PO3)3, which are of great importance in the fundamentals of aluminium electrolysis.
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