摘要
本文系用分配法研究碘分子与氯离子、溴离子和碘离子在水溶液中的络合反应。在碘分子浓度较低的情况下,用与水不相溶的氯仿作萃取剂,在恒温条件下,用国产721型分光光度计于480nm处测定吸光度,用作图法处理实验数据,用函数图解外推法求取各级络合物的积累稳定常数。结果表明有多卤络合物生成,并且所得络合物稳定常数与文献基本一致。
There were a tlot of reports about the complex compound studies of I2with X-anion in the documents. But the studies for the low concentration of I2 and for the polyreaction in non-aqueous solution are few. By using the distributive method , according to the docnments we have studied the complex reaction of I2with Cl-, Br-and I-anion in aqueous solution at low concentration of I2. The I2 is extracted by chloroform which does not dissolve in water. By using the digram method we have tracted the test data and determined the orres ponding stability constant of its complex compound. The results show hat the poly halogenated complex compound is produced, and that the oobtained stability constant is in the main in agreement with the documents.
关键词
分配法
萃取
碘
络合物
溴
Distributive method Extraction Iodo complex Stability constant
