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Thermochemistry of dipotassium calcium octaborate dodecahydrate
Jia, YZ; Li, J; Gao, SY; Xia, SP
1999-09-06
Source PublicationTHERMOCHIMICA ACTA
Volume335Issue:1-2Pages:1-4
SubtypeArticle
AbstractThe enthalpies of solution of K2O . CaO . 4B(2)O(3). 12H(2)O in approximately 1 mol dm(-3) aqueous hydrochloric acid, and of KCl in aqueous (hydrochloric acid+boric acid+calcium oxide) were determined. Together with the previously determined enthalpies of solution of H3BO3 in approximately 1 mol dm(-3) HCl(aq), and of CaO in aqueous (hydrochloric acid+boric acid), the standard molar enthalpy of formation of -(10308.00+/-6.56) kJ mol(-1) for K2O . CaO . 4B(2)O(3). 12H(2)O was obtained from the standard molar enthalpies of formation of CaO(s), H3BO3(s), KCl(s), and H2O(l). The standard molar entropy of formation of K2O . CaO . 4B(2)O(3). 12H(2)O was calculated from the thermodynamic relation with the standard molar Gibbs free energy of formation of K2O . CaO . 4B(2)O(3). 12H(2)O computed from the group contribution method. (C) 1999 Elsevier Science B.V. All rights reserved.
KeywordK2o Center Dot Cao Center Dot 4b(2)o(3)Center Dot 12h(2)o Standard Molar Enthalpy Of Formation Solution Calorimetry Molar Enthalpy Of Solution Aqueous Hydrochloric Acid Solution
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS IDWOS:000083073100001
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6020
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, Peoples R China
Recommended Citation
GB/T 7714
Jia, YZ,Li, J,Gao, SY,et al. Thermochemistry of dipotassium calcium octaborate dodecahydrate[J]. THERMOCHIMICA ACTA,1999,335(1-2):1-4.
APA Jia, YZ,Li, J,Gao, SY,&Xia, SP.(1999).Thermochemistry of dipotassium calcium octaborate dodecahydrate.THERMOCHIMICA ACTA,335(1-2),1-4.
MLA Jia, YZ,et al."Thermochemistry of dipotassium calcium octaborate dodecahydrate".THERMOCHIMICA ACTA 335.1-2(1999):1-4.
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