Vapour pressure of selenium trioxide
- 1 January 1964
- journal article
- research article
- Published by Wiley in Recueil des Travaux Chimiques des Pays-Bas
- Vol. 83 (8) , 799-809
- https://doi.org/10.1002/recl.19640830806
Abstract
The vapour pressure of solid and liquid SeO3 was measured in the temperature range between 80°C and 120°C. Measurements are easily affected by the presence of residual SO3. The triple point is situated at 120.9°C and 5.5 mm Hg. The plot of log p against 1/T shows that the heat of vaporisation depends greatly on temperature. Sublimation pressure data can be explained in terms of a tetramer‐monomer dissociation in the gaseous phase. Calculated sublimation and dissociation enthalpies are 9.0 and 119 kcal/mole (SeO3)4.Keywords
This publication has 3 references indexed in Scilit:
- The binary system sulphur trioxide‐selenium trioxideRecueil des Travaux Chimiques des Pays-Bas, 1963
- Zur Chemie der kondensierten Phosphate und Arsenate. XVII. Der Verlauf und die Produkte der Entwässerung der Monophosphorsäure H3PO4Journal für Praktische Chemie, 1957
- THE COMPOSITION OF THE STRONG PHOSPHORIC ACIDSCanadian Journal of Chemistry, 1956