| Thermodynamic Investigation of the Azeotropic Mixture Composed of Water and Benzene |
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| 作者姓名： | 南照东 谭志诚 |
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| 作者单位： | [1]DepartmentofChemistry,LiaoningNormalUniversity,Dalian,Liaoning116029,China [2]ThermochemistryLaboratory,DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian,Liaoning116023,China |
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| 基金项目： | the National Natural Science Foundation of China (No. 20073047) and K. C. Wong Education Foundation, Hong Kong. |
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| 摘 要： | The molar heat capacity of the azeotropic mixture composed of water and benzene was measured by an adiabatic calorimeter in the temperature range from 80 to 320 K. The phase transitions took place in the temperature range from 265.409 to 275.165 K and 275.165 to 279.399 K. The phase transition temperatures were determined to be 272.945 and 278.339 K, which were corresponding to the solid-liquid phase transitions of water and benzene, respectively. The thermodynamic functions and the excess thermodynamic functions of the mixture relative to standard temperature 298.15 K were derived from the relationships of the thermodynamic functions and the function of the measured heat capacity with respect to temperature.
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| 关 键 词： | 热力学 共沸混合物 水 苯 热量 绝热热量计 |
Thermodynamic Investigation of the Azeotropic Mixture Composed of Water and Benzene |
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| NAN,Zhao-Dong,a TAN,Zhi-Chengba.Thermodynamic Investigation of the Azeotropic Mixture Composed of Water and Benzene[J].Chinese Journal of Chemistry,2004,22(1):4-8. |
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| Authors: | NAN Zhao-Dong a TAN Zhi-Chengba |
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| Institution: | NAN,Zhao-Dong,a TAN,Zhi-Chengba Department of Chemistry,Liaoning Normal University,Dalian,Liaoning 116029,China b Thermochemistry Laboratory,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,Liaoning 116023,China |
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| Abstract: | The molar heat capacity of the azeotropic mixture composed of water and benzene was measured by an adia-batic calorimeter in the temperature range from 80 to 320 K. The phase transitions took place in the temperature range from 265.409 to 275.165 K and 275.165 to 279.399 K. The phase transition temperatures were determined to be 272.945 and 278.339 K, which were corresponding to the solid-liquid phase transitions of water and benzene, respectively. The thermodynamic functions and the excess thermodynamic functions of the mixture relative to stan-dard temperature 298.15 K were derived from the relationships of the thermodynamic functions and the function of the measured heat capacity with respect to temperature. |
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| Keywords: | azeotropic mixture water benzene heat capacity adiabatic calorimetry |
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