三氯化六氨合钴(Ⅲ)的组成测定方法探讨  

Discussion on the Determination Method of Components of [Co(NH_3)_6]Cl_3

作　　者：陈虹锦[1] 马荔[1] 马欣[1] 谢少艾[1] 张卫[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《实验室研究与探索》2007年第3期30-31,112,共3页Research and Exploration In Laboratory

摘　　要：[Co(NH3)6]Cl3的组成测定是基础化学实验中的一个综合实验,本文对Co2+和Cl-的测定方法进行了探讨。对Cl-的测定方法进行了改进,发现Co2+的测定用氧化还原法比配位滴定法更精确,Cl-的测定佛尔哈德法优于摩尔法。The determination of components of [ Co （NH3）6 ] Cl3 is a compositive laboratory chemistry experiment. In this paper, determination methods of Co^2＋ , Cl^- in [ Co （ NH3 ）6 ] Cl3 were discussed and determination method of Cl^- was improved. The results show that the redox titration method was more accurate to measure the content of Co^2＋ than the complex titration, and Volhard method is better to measure the content of Cl^- than Mohr method.

关 键 词：[[Co(NH3)6]Cl3 配位滴定法 氧化还原滴定法 沉淀滴定法 

分 类 号：O657.32[理学—分析化学]