| K_2Cr_2O_7法测定Fe~(2+)实验微型化研究 |
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| 引用本文： | 李雪梅,刘守庆,赵雷修,周凡蕊,周世萍. K_2Cr_2O_7法测定Fe~(2+)实验微型化研究[J]. 高师理科学刊, 2013, 0(3): 64-66 |
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| 作者姓名： | 李雪梅 刘守庆 赵雷修 周凡蕊 周世萍 |
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| 作者单位： | 西南林业大学 理学院,云南 昆明,650224 |
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| 基金项目： | 西南林业大学教育科学研究项目 |
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| 摘 要： | 借助改装的微量滴定管,考察了K2Cr2O7法测定亚铁盐样品中Fe2+实验微型化的可行性及较佳浓度范围.在不改变基本操作的前提下,借助F检验和t检验,通过与常量法比较发现,当试剂用量减少为常量法的1/5时,该实验的精密度有所下降,但仍能基本满足学生实验的要求.微量法所用K2Cr2O7标液的较佳浓度范围为0.009 40.034 0 mol/L.
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| 关 键 词： | K2Cr2O7法 微型化 滴定管 |
Study on determination of Fe2+using K2Cr2O7 titration experimental miniaturization |
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| LI Xue-mei , LIU Shou-qing , ZHAO Lei-xiu , ZHOU Fan-rui , ZHOU Shi-ping. Study on determination of Fe2+using K2Cr2O7 titration experimental miniaturization[J]. Journal of Science of Teachers＇College and University, 2013, 0(3): 64-66 |
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| Authors: | LI Xue-mei LIU Shou-qing ZHAO Lei-xiu ZHOU Fan-rui ZHOU Shi-ping |
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| Affiliation: | (School of Science,Southwest Forestry University,Kunming 650224,China) |
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| Abstract: | The feasibility and the range of concentration in the miniaturization experiment about the Fe2+content of the ferrous salt was studied through using adapted micro type burette.Keeping the basic operation,using F-test and t test,comparing with constants titration,when reagent consumption reduced to 1/5,the precision declined,but it can still basically meet the students' experiment requirement.The preferred concentration range for standard solution of K2Cr2O7is 0.009 4~0.034 0 mol/L. |
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| Keywords: | titration with K2Cr2O7 miniaturization burette |
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