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An experimental system for measurement of enthalpies of sublimation by d.s.c.

✍ Scribed by Aarón Rojas-Aguilar; Eulogio Orozco-Guareño; Melchor Martı́nez-Herrera

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
178 KB
Volume
33
Category
Article
ISSN
0021-9614

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✦ Synopsis

The sensor and control devices of a d.s.c.-7 Perkin Elmer differential scanning calorimeter have been incorporated into a system for measurement of enthalpies of sublimation. The system was tested with four sublimation reference substances: naphthalene, iodine, benzoic acid and ferrocene between the temperatures 298.15 K and 333.15 K and at constant pressure giving the following results: Substance sub H m (T ) kJ • mol -1 sub H m (298.15 K) kJ • mol -1

📜 SIMILAR VOLUMES

Standard reference material proposed for
Standard reference material proposed for enthalpy-of-sublimation measurements. A comparative study of the standard molar enthalpy of sublimation of Fe(c-C5H5)2(ferrocene) by calorimetry and knudsen-effusion techniques
✍ Luis Alfonso Torres; Ramón Gudiño; Raphaël Sabbah; Juan Antonio Guardado 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 350 KB

The standard molar enthalpy of sublimation of Fe(c-C5H5)2,bis(h-cyclopentadienyl)iron(II), ferrocene, has been experimentally determined by the Knudsen-effusion method using a quartz-crystal microbalance. The results from two series of experiments were found to be DsubH°m(298.15 K)=(74.3420.41) kJ•m