NaCl、NaBr、NaI在DMA水溶液中的电导率

Study of the Conductivity of NaCl, NaBr and NaI in DMA Aqueous Solution

钠盐在酰胺衍生物水混合溶剂中的电导率、摩尔电导率是研究溶液热力学性质的重要参数。它集中反映了指定溶剂中离子之间及离子与溶剂分子之间的相互作用。对离子溶剂化、离子缔合及溶液结构理论的研究与应用具有重要的意义。随着生物化工的发展,有机物水溶液热力学性质的测定及研究日益受到重视。为了更系统研究不同的取代基对迁移性质的影响,本文研究NaCl、NaBr、NaI与DMA(N,N-二甲基乙酰胺)水溶液的电导率,测定了NaCl、NaBr、NaI分别在浓度为0.1mol/L、0.2mol/L、0.3mol/L的DMA水溶液中,在298K、299K、300K、301K、302K五个温度下的电导率,根据公式Λm=(λ液-λ剂)×10-3/c计算NaCl、NaBr、NaI的摩尔电导率Λm,使用Origin软件进行线形分析,NaCl、NaBr、NaI在混合溶剂DMA和H2O中随温度的增加,其摩尔电导率随之增加,且基本符合线性关系。

Sodium amide derivatives in water mixed solvents in the electrical conductivity, electrical conductivity Moore solution is to study the thermodynamic properties of the important parameters. It reflects the designated solvent and ions between the ions and the interaction between the solvent molecules. Ion of the solvent, ion association and the solution of theoretical research and application is of great significance. With the development of chemical, thermodynamic properties of organic solution to the determination has a growing emphasis on research. In order to replace the system based on the different nature of the impact of migration, this paper NaC1, NaBr, NaI and DMA （N, N-dimethyl-acetamide） aqueous solution of the conductivity, measured NaC1, NaBr, NaI in concentration To 0.1 mol / L, 0.2mol / L, 0.3mol / L of the DMA （N, N-dimethyl-acetamide） solution, in the 298 K, 299K, 300K, 301K, 302K five temperature conductivity, According to formula （Am=（ λ液-λ剂） 103/c）NaC1, NaBr, NaI Moore conductivity, the use of Origin software linear analysis, NaC1, NaBr, NaI in mixed solvents DMA （N, N-dimethyl-acetamide） and H20 in the temperature increase, Moore conductivity increases, and meet the basic linear relationship.