SIOC English
化学学报
高级检索

化学学报 ›› 1959, Vol. 25 ›› Issue (5): 229-235.    下一篇

论文

溶度法求各级单核和多核络合物的稳定常数的一般处理

徐光宪1, 谭曾振1, 严继民2   

  1. 1. 北京大学化学系;
    2. 中国科学院化学研究所
  • 投稿日期:1958-09-23 发布日期:2013-06-03

THE EVALUATION OF SUCCESSIVE STABILITY CONSTANTS OF MONO-AND POLYNUCLEAR COMPLEX IONS FROM SOLUBILITY DATA

HSU KWANG-HSIEN1, TAN TSENG-CHEN1, YEN CHI-MIN2   

  1. Department of Chemistry, Peking University
  • Received:1958-09-23 Published:2013-06-03

PDF

795

被引次数

7

本文讨论利用微溶盐在含配位体的溶液中的溶解度数据以求络合物的稳定常数的处理方法。适用于单核和多核络合物,且不受只有两种络合物同时存在的限制,并能从图解法直接求得溶度积常数,而不必用其他方法测定的数据。为说明本法的应用,用溶度法研究PbI2-NaI-H2O体系。实验结果证明在碘化钠最大浓度为0.4M的范围内,溶液中有Pb++,PbI+,PbI2,PbI6-和PbI4=。稳定常数依次为:K1=19.9,K2=238,K6=1.38×103,K4=2.66×104(25℃,μ=2)。

A general treatment for the evaluation of stability constants of mononuclear coniplexee fxom solubility data has been proposed by Yatsimirskii and later by Fomin. However, their method considers only two successive comple ions exist at a time.