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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (11): 1071-1075. 上一篇    下一篇

研究论文

Li2SO4-K2SO4-MgSO4-H2O体系及次级体系298.15K时的热化学研究

李积才;曾忠民;王鲁英   

  1. 中国科学院青海盐湖研究所
  • 发布日期:1995-11-15

Thermochemistry of Li2SO4-K2SO4-MgSO4-H2O system and subsystems at 298.15K

LI JICAI;ZENG ZHONGMIN;WANG LUYING   

  • Published:1995-11-15

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用连续滴定量热法研究Li2SO4-K2SO4-MgSO4-H2O体系及次级体系Li2SO4-K2SO40H2O、Li2SO4-MgSO4-H2O和K2SO4-MgSO4-H2O 298.15K时在离子强度为15-0.1范围内的比热容和稀释热, 并结合Debye-Huckel焓极限公式研究离子强度在15-0.0001范围内的表观摩尔焓。

关键词: 水, 比热, 硫酸钾, 硫酸镁, 稀释热, 硫酸锂, 摩尔焓

The heats of dilution and heat capacities of system Li2SO4-K2SO4-MgSO4-H2O and subsystems Li2SO4-K2SO4-H2O, Li2SO4-MgSO4-H2O and K2SO4-MgSO4-H2O were measured to cover ionic strength range from 15 to 0.1 at 298.15K. The data of the heat of dilution were extrapolated to infinite dilution by use of the Debye-Huckel liminting law to obtain relative apparent molal enthalpies over the ionic strength range 15-0.0001.

Key words: WATER, SPECIFIC HEAT, POTASSIUM SULFATE, MAGNESIUM SULFATE, DILUTION HEAT, LITHIUM SULFATE

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