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盐酸在40Wt%DMSO—H2O混合溶剂中热力学性质的研究
STUDIES ON THERMODYNAMIC PROPERTIES OF HYDROCHLORIDE ACID IN 40wt%DMSO—H2O MIXED SOLVENTS
【摘要】 本文用emf法通过测定得到Pt,H2(latm)Hcl(xm)+H2O|AgCl—Ag及Pt,H2(latm)I HCl(xm)+40Wt%DMSO+H2O/AgCl—Ag两电池的标准电动势E°及其温度系数。求出盐酸从H2O到40Wt%DMSO—H2O混合溶剂的迁移自由能ΔGtr、迁移焓ΔHtr、迁移熵ΔStr及迁移活度系数wγs。进而求出盐酸在40Wt%DMS0—H2O混合溶剂中的标准生成自由能ΔfG°(298.15)。
【Abstract】 Electromotive force measurements of cells Pt,H2(latm)|HCl(xm)+H2O|AgCl—Ag and Pt,H2(latm)|HCl(xm)+40Wt%DMSO—H2O|AgCl—Ag atthree temperatures ranging from 25 to 45℃,were used to derive thestandard emf of the cells and temperature coeficients of emf.Wehave calculated the transfer free energies,transfer enthalpies and transferssactivity coeficients of HCl form water to 40Wt%DMSO—H2O mixed solventcalculated and the standard formation free energy ΔfG°(298.15)of HClmixed solvents.
【关键词】 标准电动势;
迁移热力学函数;
标准生成自由能;
【Key words】 standard electromotive force; transfer thermodynamic functions; standard formation free energy;
【Key words】 standard electromotive force; transfer thermodynamic functions; standard formation free energy;
- 【文献出处】 河南师范大学学报(自然科学版) ,Journal of Henan Normal University(Natural Science) , 编辑部邮箱 ,1989年01期
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