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题名: Enthalpy of dissolution of the complex Zn(Leu)SO4 center dot 1/2H(2)O(s)
作者: Di, YY;  Tan, ZC;  Gao, SL
刊名: INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
发表日期: 2005-11-01
卷: 44, 期:11, 页:2274-2278
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Molar enthalpies of dissolution of [ZnSO(4)(.)7H(2)O (s) and Leu (s)] mixture [h (ZnSO(4)(.)7H(2)O) : n (Leu) = 1 : 1] and the complex Zn(Leu)SO4.1/2H(2)O (S) in 100 cm 3 of 2 mol(.)dm(-1) HCl at (298.15 +/- 0.001) K have been determined to be Delta(d)H(m.l)(0) = -(84.943 +/- Molar enthalpies of dissolution of [ZnSO(4)(.)7H(2)O (s) and Leu (s)] mixture [n (ZnSO(4)(.)7H(2)O) : n (Leu) = 1 : 1] and the complex Zn(Leu)SO(4)(.)1/2H(2)O (S) in 100 cm 3 of 2 mol(.)dm(-3) HCl at (298.15 +/- 0.001) K have been determined to be Delta(d)H(m.l)(0) = -(84.943 +/- 0.090) kJ(.)mol(-1) and Delta(d)H(m.3)(0) = (55.967 +/- 0.060) kJ(.)mol(-1), respectively, using an isoperibol solution-reaction calorimeter. The standard molar enthalpy of formation of the complex Zn(Leu)SO(4)(.)1/2H(2)O(s) has been found to be Delta(f)H(m)(0) [Zn(Leu)SO4.1/2H(2)O, s, 298.15 K] =-(1998.155 +/- 0.965) J(.)mol(-1), on the basis of experimental values of enthalpies of dissolution with some auxiliary thermodynamic data through a designed Hess thermochernical cycle. The constant-volume combustion energy of the complex Zn(Leu)SO(4)(.)1/2H(2)O (s) has been measured to be Delta(c)E/J(.)g(-1) =-(9971.85 +/- 11.27) by a precision rotating bomb combustion calorimeter at 298.15 K. The standard molar enthalpy of combustion and formation of the compound have been calculated to be Delta(c)H(m)(0) =-(3007.889 +/- 3.399) kJ(.)mol(-1) and Delta(f)H(m)(0) [Zn(Leu)(SO4H2O)-H-., s] =-(2001.251 +/- 3.503) J(.)mol(-1). The relative deviation of results obtained from the two calorimetric methods agree with each other and is within +/- 0.2%.
关键词[WOS]: STANDARD MOLAR ENTHALPY ;  TEMPERATURE HEAT-CAPACITY ;  CALORIMETER
语种: 英语
WOS记录号: WOS:000233473100015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139861
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 Prov, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
3.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China

Recommended Citation:
Di, YY,Tan, ZC,Gao, SL. Enthalpy of dissolution of the complex Zn(Leu)SO4 center dot 1/2H(2)O(s)[J]. INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY,2005,44(11):2274-2278.
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