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Thermochemistry of magnesium oxysulfate
Yue, T; Zhu, LX; Liu, ZH; Gao, SY; Xia, SP
2003-06-03
Source PublicationTHERMOCHIMICA ACTA
Volume402Issue:1-2Pages:237-240
SubtypeArticle
AbstractThe enthalpies of solution of magnesium oxysulfate compounds MgSO4-5MgO-7H(2)O and MgSO4-5MgO-8H(2)O in approximately 1 mol dm(-3) aqueous hydrochloric acid were determined. From these results and the enthalpies of solution of MgSO4.7H(2)O and MgO in HCl(aq) respectively, the standard molar enthalpies of formation of -(6496.00 +/- 0.73) kJ mol(-1) for MgSO4-5MgO-7H(2)O and -(6800.17 +/- 0.55) kJ mol(-1) for MgSO4 . 5MgO-8H(2)O were obtained by using the standard molarenthalpies of formation of MgO(S), MgSO4 . 7H(2)O(s) and H2O(l). The standard molar entropies of formation of MgSO4- 5MgO . 7H(2)O and MgSO4 . 5MgO . 8H(2)O were calculated from the thermodynamic relation with the standard molar Gibbs free energy of formation Of MgSO4-5MgO-7H(2)O and MgSO4-5MgO-8H(2)O computed from a group contribution methods. (C) 2002 Elsevier Science B.V All rights reserved.
KeywordMagnesium Oxysulfate Standard Molar Enthalpy Of Formation Solution Calorimetry Molar Enthalpy Aqueous Hydrochloric Acid Solution
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordHYDROXIDE SULFATE HYDRATE ; MGSO4-MG(OH)2-H2O SYSTEM ; SOLID-PHASES ; 25-DEGREES-C ; SOLUBILITY ; CHEMISTRY ; SEAWATER
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS IDWOS:000183516100026
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6083
Collection青海盐湖研究所知识仓储
Affiliation1.Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Salt Lakes, Xian Branch, Xian 710043, Shaanxi Prov, Peoples R China
3.Shaanxi Normal Univ, Inst Appl Chem, Xian 710062, Peoples R China
Recommended Citation
GB/T 7714
Yue, T,Zhu, LX,Liu, ZH,et al. Thermochemistry of magnesium oxysulfate[J]. THERMOCHIMICA ACTA,2003,402(1-2):237-240.
APA Yue, T,Zhu, LX,Liu, ZH,Gao, SY,&Xia, SP.(2003).Thermochemistry of magnesium oxysulfate.THERMOCHIMICA ACTA,402(1-2),237-240.
MLA Yue, T,et al."Thermochemistry of magnesium oxysulfate".THERMOCHIMICA ACTA 402.1-2(2003):237-240.
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