低浓度NaCl-KCl-H_2O混合体系的电导

Conductance of the Aqueous NaCl KCl System at Low Concentration

低浓度ＮａＣｌ－ＫＣｌ－Ｈ２Ｏ混合体系的电导王亭李浩然陈庚华韩世钧（浙江大学化学系，杭州３１００２７）关键词电解质溶液电导混合效应１前言Ｏｎｓａｇｅｒ－Ｆｕｏｓｓ电导理论［１～４］能够预测低浓度下多种离子共存的混合水溶液中各离子的当量电导。在１９９...

The equivalent conductance data have been presented for mixtures of NaCl KCl at three different mixing ratios, with concentrations ranging from 1.0×10 -4 to 1.0×10 -2 mol·l -1 of water. These experimental data have been correlated with the Onsager Fuoss Chen theory of conductance and regressed by the original limiting law respectively. In Onsager Fuoss Chen theory, the higher order term involving the ion size parameter has been replaced with an empirical linear term, which agrees well with the experimental results. The mixing effect turns out to be small enough to neglect, but on the individual ionic mobilities to be substantial.