| Thermodynamic Study of the Three Isomers of Bromobenzoic Acid |
| |
| 引用本文： | 谭志诚,Sabbah Raphael. Thermodynamic Study of the Three Isomers of Bromobenzoic Acid[J]. 中国科学B辑(英文版), 1994, 0(6) |
| |
| 作者姓名： | 谭志诚 Sabbah Raphael |
| |
| 作者单位： | Dalian Institute of Chemical Physics，Academia Sinica，Dalian 116023，PRC，Centre de Thermodynamique et de Microcalorimétrie du CNRS，26，rue du 141eme R. I. A.，13003 Marseille，France |
| |
| 摘 要： | The enthalpies of sublimation and fusion and triple-point temperatures of 2-bromo-. 3-bro-mo- and 4-bromobenzoic acids have been determined precisely by sublimation calorimetry, drop calorimetry and differential thermal analysis. The measurements of sublimation enthalpy of the three acids were made at 333, 348 and 363 K, respectively, using a Tian-Calvet microcalorimeter equipped with Knudsen effusion cells. The derived standard molar enthalpies of sublimation at 298.15 K are (95. 94±0. 41), (99. 20± 0.18), and (103. 08±0. 59) kJ · mol-1for the 2-bromo-, 3-bromo- and 4-bromobenzoic acids, respectively. In addition, the saturated vapour pressure of these compounds was also calculated on the basis of the sublimation experiments. The enthalpy of fusion, the triple-point temperatures and the mole fraction purities of the samples of the investigated substances were measured using the mean temperature version DTA apparatus developed by the CTM of the CNRS in Marseille. The triple-point temperature and the
|
Thermodynamic Study of the Three Isomers of Bromobenzoic Acid |
| |
| TAN Zhi-Cheng. Thermodynamic Study of the Three Isomers of Bromobenzoic Acid[J]. Science in China(Chemistry), 1994, 0(6) |
| |
| Authors: | TAN Zhi-Cheng |
| |
| Abstract: | |
| |
| Keywords: | enthalpies of sublimation and fusion triple-point temperature sublimation calorimetry DTA 2- 3- and 4-bromobenzoic acid. |
| 本文献已被 CNKI 等数据库收录！ |
|
