| 盐湖盐类水溶液298.15K时稀释热和表观摩尔焓的研究 |
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| 引用本文： | 李积才,翟宗玺,曾忠民,王鲁英.盐湖盐类水溶液298.15K时稀释热和表观摩尔焓的研究[J].物理化学学报,1994,10(8):759-764. |
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| 作者姓名： | 李积才 翟宗玺 曾忠民 王鲁英 |
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| 作者单位： | Qinghai Institute of Salt Lakes,Academia Sinica,Xining 810008 |
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| 摘 要： | 有关溶稀释热方面的研究报导很多,例如等溶液的稀释热均已有文献值．但全是采用分批式量热法研究部分间断浓度范围内的稀释热，数据设有连续性，很不全面．在稀释热理论估算方面，Pitier的半经验溶液理论能比较满意的解决一般浓溶液的稀释热估算问题，但文献只给出了某些多数，没有计算出具体的稀释热数据6-9]，也没有将实验测定值与理论估算值相比较．基于Debye－Hckel理论推导出的烙极限公式10-12]在溶液表观摩尔烂的研究中已得到广泛应用．但迄今没有一篇论文比较全面地将实验测定与Pitier理论和Debye－Hhdel极限公式相结合来研究溶…
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| 关 键 词： | 热化学 稀释热 表观摩尔焓 氯化物 硫酸盐 |
| 收稿时间： | 1993-04-24 |
| 修稿时间： | 1993-10-22 |
Enthalpies of Dilution and Relative Apparent Molal Enthalpies of the Major Aqueous Salts of Salt Lakes at 298.15K |
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| Li Jicai, Zhai Zongxi, Zeng Zhongmin, Wang Luying.Enthalpies of Dilution and Relative Apparent Molal Enthalpies of the Major Aqueous Salts of Salt Lakes at 298.15K[J].Acta Physico-Chimica Sinica,1994,10(8):759-764. |
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| Authors: | Li Jicai Zhai Zongxi Zeng Zhongmin Wang Luying |
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| Affiliation: | Qinghai Institute of Salt Lakes,Academia Sinica,Xining 810008 |
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| Abstract: | The heat of dilution of aqueous solution of the chloride(KCl, NaCl, MgCl2,CaCl2) and sulfate (Na2SO4, K2SO4, MgSO4) of Salt Lakes were measured over a concentration range of 0.05-2.1mol?kg-1 at 298.15K. The data were extrapolated to infinite dilution by use of the Debye-Huckel limition law to obtain relative apparent molal enthalpies (ФLi). The enthalpies of dilution were calculated using the ion interaction model of Pitzer. The experimental enthalpies (△He) were compared with calculated values (△Hc)of dilution. |
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| Keywords: | Heat of dilution Apparent molal enthalpy Chloride Sulfate Salt Lakes |
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