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Cryoscopic studies on some Tungstates and Vanadates in Molten KNO 3
Author(s) -
Hassanein M.
Publication year - 1973
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19733990117
Subject(s) - chemistry , ion , inorganic chemistry , solvent , freezing point , analytical chemistry (journal) , thermodynamics , chromatography , organic chemistry , physics
The depression of the freezing point of molten KNO 3 , as solvent, was measured after the addition of small concentrations of the solutes: 1. WO 3 , K 2 WO 4 , K 2 W 2 O 7 and 2. V 2 O 5 , Cs 2 V 6 O 16 and Rb 2 V 6 O 16 . DTA‐apparatus was used in the measurements. The results showed that the investigated tungstates and vanadates were dissociated in the melt with the formation of monotungstate (WO 4 ) 2− and orthovanadate (VO 4 ) 3− ‐ions.