草酸与铬络合物配位反应的研究

摘要

The coordinate reaction of oxalic acid and chromium complex was investigated with acidometer and conductivity meter. The results showed that the changes of pH value and conductivity demonstrated the kinds of interaction such as substitution and deolation between oxalic acid and chromium complex according to the static process including the species,quantity and size of ions and the dynamic process migration rate of ions for example. Both the pH value and conductivity of the solution descended as a result of the substitution of H2O and acid ligands. The pH value increased and the conductivity decreased when deolation.The substitution was much easier compared with deolation.%采用反应液pH值和电导率相结合的方法,研究了草酸与铬络合物的配位反应.结果表明:pH值和电导率可从溶液中离子种类、数量、大小等静态变化,以及离子迁移速率等动态变化的不同角度反映草酸根对铬络合物配体的取代、去配聚作用.草酸取代铬络合物中的水及酸根配体比较容易,反应液pH值和电导率下降,去配聚作用比较难,反应液pH值升高,电导率下降.