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题名: Low-temperature heat capacities and thermodynamic properties of hydrated sodium cupric arsenate [NaCuASO(4) center dot 1.5H2O(s)]
作者: Chen Jing-tao;  Di You-ying;  Tan Zhi-cheng;  Sun Li-xian
通讯作者: Di You-ying
关键词: NaCuAsO4 center dot 1. 5H(2)O(S) ;  adiabatic calorimetry ;  heat capacity ;  thermodynamic function ;  dehydration process
刊名: CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
发表日期: 2007-09-01
卷: 23, 期:5, 页:574-578
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1504
产权排名: 3;3
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Low-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.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000250324000020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99625
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, 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:
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.
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