The determination of the standard molar enthalpy of formation of 4-chlorobenzoic acid by micro rotating-bomb combustion calorimetry

被引：17
|
作者：
Santos, RC [1 ]
Diogo, HP [1 ]
da Piedade, MEM [1 ]
机构：
[1] Univ Tecn Lisboa, Ctr Quim Estrutural, Inst Super Tecn, P-1049 Lisbon, Portugal
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 1999年 / 31卷 / 11期
关键词：
thermochemistry; combustion calorimetry; energy of combustion; enthalpy of formation; 4-chlorobenzoic acid;
D O I：
10.1006/jcht.1999.0493
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The application of a micro rotating-bomb combustion calorimeter to chlorine-containing organic compounds was tested by determining the standard massic energy of combustion and the Standard molar enthalpy of formation of 4-chlorobenzoic acid at 298.15 K. Experiments with samples of masses in the range 25.5 mg to 39.5 mg led to Delta(C)u(o) = -(19563.45 +/- 4.88) J.g(-1) and Delta(f)H(m)(o) (C7H5O2Cl, cr) -(429.9 +/- 2.2) kJ.mol(-1) in good agreement with the corresponding values recommended in the literature. (C) 1999 Academic Press.
引用
收藏
页码：1417 / 1427
页数：11
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