摘要
用分光光度法测定了在20.0±0.1℃温度下,pH=3.5以NaClO_4为支持电解质的水溶液中,Tiron与高价阳离子铟形成的配合物的浓度稳定常数,考察了该常数随溶液离子强度的变化规律.溶液离子强度变化范围为I=0.25～3.3mol·L^(-1) .采用等摩尔连续变化法确定了该配合物的组成为1:1.用基于Pitzer方程的最小二乘多项式逼近法确定了该配阴离子的热力学稳定常数.
The stability constants of Tiron indium complex in the system NaClO_4-H_2O were de-termined by spectrophotometric method at pH=3. 5,20. 0±0. 1℃.The total ionic strengths of so-lutions were 0. 25-3. 3mol/L maintained by NaClO_4. The constitutional formula of the complex was determined 1:1 by mole ration method.On the basis of Pitzer's equation,the thermodyna-mic stability constant of Tiron indium complex was attained by a method of polynomial approxi-mation.
出处
《辽宁师范大学学报（自然科学版）》
CAS
1993年第1期78-82,共5页
Journal of Liaoning Normal University:Natural Science Edition
关键词
稳定常数
TIRON
锢
络合物
Tiron indium complex
stability constant
pitzer's equation
