电导法测定298K时稀土氯化盐在水中的活度系数

The Activity Coefficient of Rare Earths Salt in H_2O with Conductivity Method at 298 K

应用电导法测定了298 K时4种稀土氯化盐 ErCl3、DyCl3、NdCl3 和 YCl3 在极性水溶剂中的电导率,计算了稀土氯化盐的摩尔电导率,利用Debye Hücker和Osager Falkenhangen公式计算了稀土氯化盐在水中的活度系数.实验了298 K时稀土盐水溶液浓度对活度系数的影响,结果表明,随稀土氯化盐水溶液浓度的增加,其活度系数降低.

The activity coefficient of Rare Earths salt ErCl_3、DyCl_3、NdCl_3 and YCl_3 in H_2O solvent at 298K is determined by conductivity method,the molar conductivity of Rare Earths salt in H_2O is calculated as well as the activity coefficient of Rare Earths salt with Debye-Hücker and Osager-Falkenhangen formula.The effect of concentration on activity coefficient of electrolyte solution at 298K is discussed.With the increasing of the concentration of Rare Earths salt in the solution,the activity coefficient of Rare Earths salt in the solution get lower.