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| 品红褪色机理的实验探究 | |
| 引用本文： | 温培娴,丁伟.品红褪色机理的实验探究[J].化学教育,2020,41(7):96-100. |
| 作者姓名： | 温培娴 丁伟 |
| 作者单位： | 1.深圳外国语学校 广东深圳 518000; 2.华东师范大学教师教育学院 上海 200062 |
| 摘 要： | 中学阶段常用于检验二氧化硫气体的品红溶液分为酸性品红和碱性品红2种。通过设计集演示、对比于一体的绿色环保二氧化硫性质实验装置,优化实验条件,探讨了酸性品红和碱性品红与SO2、酸碱反应的性质差异及褪色机理,并提出鉴别酸性品红和碱性品红的简便办法。 |
| 关 键 词： | 褪色机理 酸性品红 碱性品红 二氧化硫 |
Inquiry on the Mechanism of Magenta Fading Reaction |
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| WEN Pei-Xian,Ding Wei.Inquiry on the Mechanism of Magenta Fading Reaction[J].Journal of Chemical Education,2020,41(7):96-100. | |
| Authors: | WEN Pei-Xian Ding Wei |
| Institution: | 1.Shenzhen Foreign Languages School, Shenzhen 518000; 2.College of Teacher Education, East China Normal University, Shanghai 200062, China |
| Abstract: | The magenta solution used to identify sulfur dioxide gas is divided into two kinds:acid magenta and alkaline magenta.In this article,the mechanism of fading reaction and differences between acid magenta and alkaline magenta while reacting with sulfur dioxide or acid or base were discussed by optimizing the experimental conditions through a green and improved experimental equipment integrating demonstration and comparative function.Moreover,a simple way to identify acid magenta and alkaline magenta had also been put forward. |
| Keywords: | fading mechanism acid magenta alkaline magenta sulfur dioxide |
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