盐湖盐类水溶液298.15K时稀释热和表观摩尔焓的研究

doi:10.3866/PKU.WHXB19940819

Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (08): 759-764.doi: 10.3866/PKU.WHXB19940819

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Enthalpies of Dilution and Relative Apparent Molal Enthalpies of the Major Aqueous Salts of Salt Lakes at 298.15K

Li Ji-Cai, Zhai Zong-Xi, Zeng Zhong-Min, Wang Lu-Ying

Qinghai Institute of Salt Lakes,Academia Sinica,Xining 810008

Received:1993-04-24 Revised:1993-10-22 Published:1994-08-15
Contact: Li Ji-Cai

Abstract

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.

Key words: Heat of dilution, Apparent molal enthalpy, Chloride, Sulfate, Salt Lakes

Li Ji-Cai, Zhai Zong-Xi, Zeng Zhong-Min, Wang Lu-Ying. Enthalpies of Dilution and Relative Apparent Molal Enthalpies of the Major Aqueous Salts of Salt Lakes at 298.15K[J]. Acta Phys. -Chim. Sin. 1994, 10(08), 759-764. doi: 10.3866/PKU.WHXB19940819

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Enthalpies of Dilution and Relative Apparent Molal Enthalpies of the Major Aqueous Salts of Salt Lakes at 298.15K

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