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题名: A solution-reaction isoperibol calorimeter and standard molar enthalpies of formation of Ln(hq)(2)Ac (Ln = La, Pr)
作者: Yu, HG;  Liu, Y;  Tan, ZC;  Dong, JX;  Zou, TJ;  Huang, XM;  Qu, SS
关键词: solution-reaction isoperibol calorimeter ;  enthalpy of solution ;  standard molar enthalpy of formation ;  coordination compound of rare earth ;  8-hydroxyquinoline ;  acetic acid
刊名: THERMOCHIMICA ACTA
发表日期: 2003-05-19
卷: 401, 期:2, 页:217-224
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: An on-line solution-reaction isoperibol calorimeter has been constructed. The performance of the apparatus was evaluated by measuring the molar enthalpy of solution of KCl in water at 298.15 K. The uncertainty and the inaccurary of the experimental results were within +/-0.3% compared with the recommended reference data. Using the calorimeter, the molar enthalpies of reaction for the following two reactions: LaCl(3)(.)7H(2)O(s)+2Hhq(s)+NaAc(s) = La(hq)(2)Ac(s)+NaCl(s)+2HCl(g)+7H(2)O(l) and PrCl(3)(.)6H(2)O(s)+2Hhq(s)+NaAc(s) = Pr(hq)(2)Ac(s)+NaCl(s)+2HCl(g)+6H(2)O(l), were determined at T = 298.15 K, as -(78.3 +/- 0.6) and -(97.3 +/- 0.5)kJ mol(-1), respectively. From the above molar enthalpies of reaction and other auxiliary thermodynamic quantities, the standard molar enthalpies of formation of La(hq)2Ac and Pr(hq)2Ac, at T = 298.15 K, have been derived to be -(1535.5 +/- 0.7) and -(1536.7 +/- 0.6) kJ mol(-1), respectively. (C) 2002 Elsevier Science B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000183007300015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138310
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.Wuhan Univ, Dept Chem, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Yu, HG,Liu, Y,Tan, ZC,et al. A solution-reaction isoperibol calorimeter and standard molar enthalpies of formation of Ln(hq)(2)Ac (Ln = La, Pr)[J]. THERMOCHIMICA ACTA,2003,401(2):217-224.
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