| 氯苯类化合物在盐水溶液中的活度系数 |
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| 引用本文： | 谢文蕙,郑子勤,汤鸣,李东.氯苯类化合物在盐水溶液中的活度系数[J].物理化学学报,1993,9(3):392-397. |
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| 作者姓名： | 谢文蕙 郑子勤 汤鸣 李东 |
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| 作者单位： | Department of Chemistry, Peking University, Beijing 100871 |
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| 摘 要： | 在25.00±0.01 ℃下用紫外、可见分光光度法分别测定了氯苯(CB)、m-二氯苯(mDCB)、p-二氯苯(pDCB)、1,2,4-三氯苯(TCB)在NaCl、KCl、Na_2CO_3、K_2SO_4、CaCl_2盐水溶液及氯苯在Et_4NBr水溶液中的话度系数, 得出盐效应常数. 除Et_4NBr对氯苯呈盐溶作用, 其余均为盐析作用. 盐析次序大致为K_2SO_4>Na_2CO_3>CaCl_2>NaCl>KCl. 计算了盐效应常数的各种理论值, 与实验值进行比较, 进一步证实了改进后的内压力理论值更接近实际. 同时也讨论了这些数据在环保中的应用.
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| 关 键 词： | 活度系数 盐效应 氯苯类化合物 |
| 收稿时间： | 1991-12-29 |
| 修稿时间： | 1992-11-25 |
STUDIES ON ACTIVITY COEFICIENTS OF CHLOROBENZENE SYSTEM IN AQUEOUS SALT SOLUTIONS |
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| Xie Wenhui Zheng Ziqin Tang Ming Li Dong Mackay Donald Shao Yunreng Zhang Shuxian.STUDIES ON ACTIVITY COEFICIENTS OF CHLOROBENZENE SYSTEM IN AQUEOUS SALT SOLUTIONS[J].Acta Physico-Chimica Sinica,1993,9(3):392-397. |
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| Authors: | Xie Wenhui Zheng Ziqin Tang Ming Li Dong Mackay Donald Shao Yunreng Zhang Shuxian |
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| Institution: | Department of Chemistry, Peking University, Beijing 100871 |
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| Abstract: | The activity coefficients of chlorobenzene,m-,p-dichlorobenzene and 1,2,4-tri-chlorobenzene in NaCl,KCl,Na_2CO_3,K_2SO_4 and CaCl_2 aqueous salt solutions,andchlorobenzcne in Et_4NBr have been determined at 298.15K by spectrophotometry.The chlorobenzene in Et_4NBr aqueous salt solution is salting-in,while others aresalting-out.The experimentsl salting-out orders are as follows:K_2SO_4>Na_2Co_3>CaCl_2>NaCl>KCl.These results are compared with the calculated results of Debye-McAulay and Conway-Desnoyers-Smith electrostatic theories;Masterton-Lee scaledparticle theory.MeDevit-Long internal pressure theory and modified internal pressuretheory.It is verified that the modified internal pressure theory coincides with theexperimental value better. |
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| Keywords: | Activity coefficient Salt effect Chlorobenzene system |
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