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使用LKB 2107型微量热计-微机数据采集系统测量了288.15K、298.15K、308.15K下LiCl/-n-C3H7OH-H2O体系在不同混合溶剂浓度下的稀释热。测量结果用扩展的Debye-H(ckl方程、Pitzer模型和单参数模型关联。计算了方程中的参数和溶液无限稀释热 - (mLiCl=1mol·kg-1溶剂)。结果表明:相同混合溶剂浓度下,-随温度增加而增加;同一温度下, -还与溶剂浓度有关,< 0.88时,随的增大而增大,到0.88左右达最大值。
The heat of dilution of LiCl / -n-C3H7OH-H2O system at 288.15K, 298.15K and 308.15K at different mixed solvent concentrations was measured by LKB 2107 microcalorimeter-PC data acquisition system. The measured results were correlated with the extended Debye-H (ckl equation, Pitzer model and the one-parameter model. The parameters in the equation and the infinite dilution heat of solution - (mLiCl = 1 mol kg- 1 solvent) were calculated.The results showed that the same mixed solvent concentration Under the same temperature, - also with the solvent concentration, <0.88, with the increase and increase to about 0.88 up to the maximum.