Add time:08/07/2019         Source:sciencedirect.com

The present paper deals with studies on vaporisation of cesium monouranate and enthalpies of formation of cesium molybdate and cesium chromate. Vaporization studies of cesium monouranate using Knudsen cell in combination with quadrupole mass spectrometer at the temperature range of 1000–1573 K have indicated that at a temperature above 1223 K it decomposes to cesium polyuranate and cesium vapour. Cesium ion current vs temperature graphs have been plotted. The slope has thus been experimentally found to be −4.1 × 104 which compares well with the calculated value of the temperature co-efficient of the decomposition reaction. The enthalpies of formation of cesium molybdate and cesium chromate have been determined by static bomb calorimetry by reacting cesium carbonate with respective oxide in ultra pure oxygen.

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