DyCl_3在异丙醇中无限稀释摩尔电导率的测定  

Determination of the infinite dilution molar conductivity of DyCl_3 in isopropanol

作　　者：王卫东[1] 吴慧娟[1] 林书雄[1] 

机构地区：[1]湖北师范学院化学与环境工程学院,湖北黄石435002

出　　处：《宝鸡文理学院学报（自然科学版）》2009年第2期35-37,共3页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：湖北省教育厅重点科研项目(D20082202);湖北师范学院应用研究项目(2007E02)

摘　　要：目的研究DyCl3在异丙醇溶剂中的电导率变化规律。方法根据实验在303．15～313．15K温度范围内测定DyCl3在异丙醇溶剂中的电导率，求得DyCl3的摩尔电导率值，应用Kohl—rausch经验规则，使用Origin软件进行线性拟合，作图外推求得DyCl3在异丙醇中鲋，无限稀释摩尔电导率λ0／（S·cm2·mol^-1）值，并讨论DyCl3在异丙醇中的λ／（S·cm2·mol^-1）与温度（T）的关系。结果利用线性拟合方法求得在303．15K、308．15K和313．15K温度时DyCl3在异丙醇中的λ／（S·cm2·mol^-1）分别为4．83、6．31和6．46。结论在303．15～313．15K温度范围内，DyCl3在异丙醇中的λ／（S·cm2·mol^-1）随T的升高而增加，并兰显出线性关系。Aim To study the conductivity changes of DyCl3 in isopropanol. Methods Firstly, the conductivity of DyCl3 in isopropanol was determined at 303.15 K to 313.15 K to calculate the molar conductivity of DyCl3 ; secondly, Kohlrausch formula and Origin software were used to make the diagram of linear fitting, finally the diagram was pushed outside and the molar conductivity at infinite dilution λ0/（S·cm2·mol^-1 ） of DyCl3 in isopropanol was calculated, and the influence of the temperature on;λ0/（S·cm2·mol^-1） of DyCI3 electrolyte solution was investigated. Results By the experiments, λ0/（S·cm2·mol^-1） of DyC13 in isopropanol were obtained with linear fitting method at different temperatures, λ0/（S·cm2·mol^-1） is 4. 83, 6. 31 and 6. 46 respectively at 303. 15 K, 308.15 K and 313.15 K. Conclusion It is found that there is a linear relation between λ0 of DyCl3 in isopropanol and the temperature in the temperature range of 303.15 K to 313.15 K, and λ0 became larger with increase in the temperature got higher.

关 键 词：电解质溶液 电导率 摩尔电导率 无限稀释摩尔电导率 DYCL3 异丙醇 

分 类 号：O645.11[理学—物理化学]