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题名: Low-temperature heat capacity and standard molar enthalpy of formation of the complex Zn(Thr)SO4 center dot H2O(S)
作者: Di, YY;  Tan, ZC;  Zhang, GQ;  Chen, SP;  Liu, Y;  Sun, LX
关键词: low-temperature heat capacity ;  isoperibol solution calorimetry ;  dissolution enthalpy ;  standard molar enthalpy of formation ;  Zn(Thr)SO4 center dot H2O
刊名: THERMOCHIMICA ACTA
发表日期: 2003-04-17
卷: 400, 期:1-2, 页:43-49
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: Low-temperature heat capacities of the complex Zn(Thr)SO4.H2O (s) have been precisely measured with a small sample adiabatic calorimeter over the temperature range from 78 to 373 K. The initial dehydration temperature of the complex (T-d = 325.50 K) has been obtained by analysis of the heat-capacity curve. The experimental values of molar heat capacities have been fitted to a polynomial equation by least square method. The standard molar enthalpy of formation of the complex has been determined from the enthalpies of dissolution (Delta(d)H(m)(Theta)) of [ZnSO4.7H(2)O(S)+Thr (s)] and Zn(Thr)SO4.H2O (s) in 100 ml of 2 mol dm(-3) HCl solvent as: Delta(f)H(m,Zn(Thr)SO4.H2O)(Theta) = -2111.7 +/- 3.4 kJ mol(-1). These experiments were made by using an isoperibol solution calorimeter at 298.15 K. (C) 2002 Elsevier Science B.V. All rights reserved.
关键词[WOS]: CALORIMETER
语种: 英语
WOS记录号: WOS:000182494100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138333
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.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
2.Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
3.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China

Recommended Citation:
Di, YY,Tan, ZC,Zhang, GQ,et al. Low-temperature heat capacity and standard molar enthalpy of formation of the complex Zn(Thr)SO4 center dot H2O(S)[J]. THERMOCHIMICA ACTA,2003,400(1-2):43-49.
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