摘要
采用电导法测定了水溶液中298.15 K时VOSO4·n H2O(s)的电导率,通过Origin数据拟合求出极限摩尔电导;采用改进的Ostwald稀释定律和改进的Davies方程求解活度系数,进而求得溶液的真实离子强度;采用Shedlovsky方法求解硫酸氧钒离子对的解离常数。经过数据处理得到了298.15 K时硫酸氧钒极限摩尔电导率Λ0为209.205 020 9S·dm2/mol,硫酸氧钒离子对的解离常数Kd为0.001 756 218,进而可以研究其他相关热力学性质。
The VOSO4@n H2o（s） conductivity in aqueous solution was determined by using electric conductivity method at 298.15 K; the limiting molar conductivity was obtained by using Origin data fitting, then with improved Ostwald dilution law and Davies equation, the activity coefficient was solved to obtain the true solution ionic strength. Through the Shedlovsky method, the vanadyl sulfate ion-pair dissociation constant was calculated. The vanadyl sulfate limiting molar conductivity Ao is 209.205 020 9 S. dm^2/mol and the vanadyl sulfate ion-pair dissociation constant Kd is 0.001 756 218, then other thermodynamic properties can be studied.
出处
《电源技术》
CAS
CSCD
北大核心
2015年第6期1254-1256,共3页
Chinese Journal of Power Sources
基金
国家自然科学基金(21273152)
