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水溶液中Fe2(SO4)3与KI反应的研究
Study on the Reaction of Fe2(SO4)3 and KI in the Aqueous Solution
【摘要】 研究了不同温度下水溶液中Fe2(SO4)3与KI(Na2S2O3,淀粉)的反应速率.在15-29℃范围内,Fe2(SO4)3与KI(Na2S2O3,淀粉)的反应速率比相同条件下的Fe(NO3)3反应体系慢3-4倍.使用721-分光光度计测定了水溶液中Fe(Ⅲ)与SO42-离子形成配合物的配位比.结果表明,在PH=1.5及21℃时,存在Fe2(SO4)3的二聚体Fe4(SO4)6。
【Abstract】 The reaction rate of Fe2(SO4)3, and KI (Na2S2O3. starch) in the aqueous solution has been studied at different temperature. Between the temperture 15℃ and 29℃,the reaction rate of Fe2(SO4)3 and KI (Na2S2O3, starch)is about 3-4 times slower than that of Fe(NO3)3 at the same conditions. The coordination ratio of Fe(Ⅲ)-SO42- coordination compound is determined by means of 721-spectrophotometer.The result shows tha the Fe4(SO4)6,the dimer of Fe2(SO4)3 exists in the solution at the condition of pH=1.5 and T=21℃.
- 【文献出处】 河北建筑科技学院学报 ,JOURNAL OF HEBEI INSTITUTE OF ARCHITECTURAL SCIENCE AND TECHNOLOGY , 编辑部邮箱 ,1999年04期
- 【分类号】O61-3
- 【下载频次】21