Thermodynamic study of the vaporization of uracil |
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Authors: | G. Bardi L. Bencivenni D. Ferro B. Martini S. Nunziante Cesaro R. Teghil |
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Affiliation: | Centro per la Termodinamica Chimica Alle Alte Temperature, c/o Istituto di Chimica Fisica, Università degli Studi, 00185 Rome Italy |
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Abstract: | The vapour pressure of uracil was measured in the temperature range 452–587 K using different techniques and the pressure—temperature equation log P(kPa) = 12.13 ± 0.50 — (6823 ± 210)/T was derived. The thermodynamic functions of gaseous and solid uracil were also evaluated through spectroscopic and calorimetric measurements. The sublimation enthalpy of uracil, ΔH0298 = 131 ± 5 kJ mole?1, was derived from second and third law treatment of the vapour data. |
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