| 三元体系Na2SO4-CuSO4-H2O 25 ℃活度系数的研究 |
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| 引用本文： | 姚燕,Atkinson,G.. 三元体系Na2SO4-CuSO4-H2O 25 ℃活度系数的研究[J]. 物理化学学报, 1991, 7(1): 57-63. DOI: 10.3866/PKU.WHXB19910109 |
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| 作者姓名： | 姚燕 Atkinson G. |
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| 作者单位： | Qinghai Institute of Salt Lakes, Academia Sinica, Xining, Qinghai; Department of Chemistry, University of Oklahoma, Norman, OK73019 USA |
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| 摘 要： | 用自制的Hg-Hg_2SO_4电极和Na离子选择性电极, 在25 ℃和离子强度分别为1.0和2.0的条件下, 测定了Na_2SO_4在Na_2SO_4和CuSO_4混合水溶液中的平均活度系数。对所使用的电极组的热力学响应、重现性等性能进行了检验。根据文献提供的Pitzer方程, 推导了计算Na_2SO_-CuSO_4-H_2O体系中Na_2SO_4和CuSO_4平均活度系数的表达式, 求出了Pitzer混合参数和Harned方程系数, 计算了CuSO_4在该体系中的平均活度系数。
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| 关 键 词： | 三元体系Na2SO4-CuSO4-H2O 离子强度 活度系数 Na离子选择电极 电动势法 |
| 收稿时间： | 1989-08-31 |
| 修稿时间： | 1990-05-03 |
Thermodynamics of Electrolyte Mixtures Activity Coefficients in Aqueous Na2SO4-CuSO4 at 25 ℃ |
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| Yao Yan. Thermodynamics of Electrolyte Mixtures Activity Coefficients in Aqueous Na2SO4-CuSO4 at 25 ℃[J]. Acta Physico-Chimica Sinica, 1991, 7(1): 57-63. DOI: 10.3866/PKU.WHXB19910109 |
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| Authors: | Yao Yan |
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| Affiliation: | Qinghai Institute of Salt Lakes, Academia Sinica, Xining, Qinghai; Department of Chemistry, University of Oklahoma, Norman, OK73019 USA |
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| Abstract: | In previous reports the ternary system Na_2SO_4-CuSO_4-H_2O was investigated by osmotic coefficient and solubility work. This paper reports the determenations of the mean activity coefficients of Na_2SO_4 in the ternary system at 25 ℃ and ionic strength 1.0 and 2.0 by emf method using a Na sensitive glass electrode vs. Hg-Hg_2SO_4 electrodes. The Hg-Hg_2SO_4 electrodes were prepared in our laboratory and performance tests for the electrode pair were carried out. Linear near-Nernst response and good reproducibility and stability were observed.Pitzer's recent equations were used to derived... |
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| Keywords: | Ternary system Na_2SO_4-CuSO_4-H_2O Ionic strength Activity coefficients Na Sensitive electrode emf method |
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