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题名: Synthesis, Characterization, and Thermodynamic Study of Barium Benzoate Ba(C7H5O2)(2)(s)
作者: Yang, Wei-Wei1;  Di, You-Ying1;  Kong, Yu-Xia1;  Zhu, Yan-Feng1;  Tan, Zhi-Cheng2
刊名: JOURNAL OF CHEMICAL AND ENGINEERING DATA
发表日期: 2009-07-01
DOI: 10.1021/je800876t
卷: 54, 期:7, 页:2038-2044
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Benzoic acid and barium hydroxide octahydrate were used as reactants, and it compound Ba(C7H5O2)(2)(s) was synthesized by the method of hydrothermal reaction. Chemical and elemental analyses, FTIR, and X-ray powder diffraction techniques were applied to characterize the composition and structure of the compound. Low-temperature heat capacities of the compound were measured by a precision automated adiabatic calorimeter over the temperature range from (77 to 402) K. A polynomial equation of the heat capacities as a function of temperature was fitted by the least-squares method. Smoothed heat capacities and thermodynamic functions of the compound were calculated on the basis of the fitted polynomial. The enthalpy change of the reaction of benzoic acid with barium hydroxide octahydrate was determined to be (22.03 +/- 0.30) kJ.mol(-1) by respective measuring enthalpies of dissolution of benzoic acid and Ba(C7H5O2)(2)(s) in 0.1 mol.dm(-1) HCl and barium hydroxide octahydrate in 0.1 mol.dm(-3) HCl solution containing certain amounts of benzoic acid at 298.15 K by using an isoperibol solution-reaction calorimeter. The standard molar enthalpy of formation of the title compound Ba(C7H5O2)(2)(s) was derived to be -(1231.47 +/- 1.12) kJ.mol(-1) in accordance with Hess' law.
关键词[WOS]: STANDARD MOLAR ENTHALPY ;  CALORIMETER
语种: 英语
WOS记录号: WOS:000268140000013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141306
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Wei-Wei,Di, You-Ying,Kong, Yu-Xia,et al. Synthesis, Characterization, and Thermodynamic Study of Barium Benzoate Ba(C7H5O2)(2)(s)[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2009,54(7):2038-2044.
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