| 电动势法测量热力学函数实验改进 |
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| 引用本文： | 陈宝林,刘冬生,冯祥明. 电动势法测量热力学函数实验改进[J]. 新乡学院学报(自然科学版), 2011, 0(6): 509-510 |
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| 作者姓名： | 陈宝林 刘冬生 冯祥明 |
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| 作者单位： | 河南环宇集团有限公司;郑州大学化学系 |
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| 基金项目： | 河南省科技厅重大科技专项项目(91100211700) |
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| 摘 要： | 以Zn电极为负极,Ag/AgCl电极为正极,ZnSO4（0.1 mol.L-1）-KCl（0.1 mol.L-1）为电解液组成Zn-AgCl可逆实验电池,以该电池为实验对象测量相应化学反应的热力学函数.实验测得Zn-AgCl可逆实验电池在25℃时的电动势为0.992 1 V,温度系数为7.2×10-4V/K.结果表明,采用该电池可以显著增强电动势法测量热力学函数实验的可行性.
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| 关 键 词： | 电动势 热力学函数 可逆电池 |
Experiment Improvement of Measuring Thermodynamic by Potentiometry Method |
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| CHEN Bao-lin,LIU Dong-sheng,FENG Xiang-ming. Experiment Improvement of Measuring Thermodynamic by Potentiometry Method[J]. , 2011, 0(6): 509-510 |
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| Authors: | CHEN Bao-lin LIU Dong-sheng FENG Xiang-ming |
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| Affiliation: | 1.Henan Huanyu Group Co.Ltd,Xinxiang 453002,China; 2.Department of Chemistry,Zhengzhou University,Zhengzhou 450052,China) |
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| Abstract: | A reversible Zn-AgCl cell is fabricated with Zn as cathode,Ag/AgCl as anode and ZnSO4（0.1 mol？L-1）-KCl（0.1 mol？L-1） solution as electrolyte.Taking the cell as experimental object,corresponding thermodynamic function of chemical reaction is measured.It is measured that electromotive force（EMF） and temperature coefficient of the cell reached 0.992 1 V at 25 ℃ and 7.2×10-4 V/K,respectively.The results show that the cell can significantly improve the feasibility of measuring thermodynamic function with potentiometry. |
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| Keywords: | electromotive force thermodynamics reversible cell |
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