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Low-temperature heat capacities and thermodynamic properties of hydrated sodium cupric arsenate [NaCuASO(4) center dot 1.5H2O(s)]
Chen Jing-tao; Di You-ying; Tan Zhi-cheng; Sun Li-xian
KeywordNacuaso4 Center Dot 1. 5h(2)o(s) Adiabatic Calorimetry Heat Capacity Thermodynamic Function Dehydration Process
Source PublicationCHEMICAL RESEARCH IN CHINESE UNIVERSITIES
2007-09-01
ISSN1005-9040
Volume23Issue:5Pages:574-578
Indexed BySCI
SubtypeArticle
Department15
Funding Project1504
Contribution Rank3;3
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
AbstractLow-temperature heat capacities of the solid compound NaCuAsO4 center dot 1.5 H2O (s) were measured using a precision automated adiabatic calorimeter over a temperature range of T = 78 K to T = 390 K. A dehydration process occurred in the temperature range of T = 368-374 K. The peak temperature of the dehydration was observed to be T-D = ( 371.828 +/- 0.146) K by means of the heat-capacity measurement. The molar enthalpy and entropy of the dehydration were Delta H-D(m) = (18.571 +/- 0.142) kJ/mol and Delta S-D(m) = (49.946 +/- 0.415) J/( K center dot mol), respectively. The experimental values of heat capacities for the solid( I) and the solid-liquid mixture( 11) were respectively fitted to two polynomial equations by the least square method. The smoothed values of the molar heat capacities and the fundamental thermodynamic functions of the sample relative to the standard reference temperature 298.15 K were tabulated at an interval of 5 K.
Language英语
URL查看原文
WOS IDWOS:000250324000020
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/99625
Collection中国科学院大连化学物理研究所
Corresponding AuthorDi You-ying
Affiliation1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China
2.Shaanxi Educ Coll, Dept Chem, Xian 710061, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Chen Jing-tao,Di You-ying,Tan Zhi-cheng,et al. Low-temperature heat capacities and thermodynamic properties of hydrated sodium cupric arsenate [NaCuASO(4) center dot 1.5H2O(s)][J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2007,23(5):574-578.
APA Chen Jing-tao,Di You-ying,Tan Zhi-cheng,&Sun Li-xian.(2007).Low-temperature heat capacities and thermodynamic properties of hydrated sodium cupric arsenate [NaCuASO(4) center dot 1.5H2O(s)].CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,23(5),574-578.
MLA Chen Jing-tao,et al."Low-temperature heat capacities and thermodynamic properties of hydrated sodium cupric arsenate [NaCuASO(4) center dot 1.5H2O(s)]".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 23.5(2007):574-578.
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