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利用电动势法测定了298.15K时电解质(KCl,NaCl,HCl,MgCl_2和CaCl_2)从水到葡萄糖水溶液(5、10、15、20、25、30％葡萄糖)的标准转移自由能。结果表明,所研究的每一电解质的标准转移自由能均随混合介质中葡萄糖的物质的量分数的增加而线性增大。此外,本文计算了水溶液中电解质—葡萄糖对相互作用的自由能参数。发现在水溶液中,NaCl葡萄糖,HCl—葡萄糖和CaCl_2葡萄糖相互作的自由能参数是正值,KCl—葡萄糖,MgCl_2—葡萄糖的自由能参数接近于零,根据三元体系中溶质—溶剂和溶质—溶质的相互作用对实验结果进行了分析讨论。
The standard transfer energy of electrolytes (KCl, NaCl, HCl, MgCl 2 and CaCl 2) from water to aqueous dextrose (5, 10, 15, 20, 25, 30% glucose) was measured by electromotive force method at 298.15K. The results show that the standard transfer free energy for each electrolyte investigated increases linearly with increasing fraction of glucose in the mixed medium. In addition, we calculated the free energy parameters of electrolyte-glucose interaction in aqueous solution. It is found that the free energy parameter of NaCl glucose, HCl-glucose and CaCl 2 glucose is positive in aqueous solution. The free energy parameter of KCl-glucose and MgCl 2 -glucose is close to zero. According to the solubility of solute-solvent and solute- The interaction of solutes discussed the experimental results.