摘要
偶然发现铁与硫酸铜溶液反应过程中溶液pH呈现下降趋势。针对这一异常现象进行实验探究,发现亚铁离子被氧化是产生异常现象的关键副反应。据此提出,消除异常现象的方法是用热的去氧蒸馏水配制2%的硫酸铜溶液,且反应装置要密闭。
It was accidentally found that the pH of the solution decreased during the reaction between iron and copper sulfate solution. It was found that the oxidation of ferrous ions was the key side reaction of the abnormal phenomenon. Therefore, it was proposed that the method to eliminate the abnormal phenomenon was to prepare 2% copper sulfate solution with hot deoxidized distilled water, and the reaction device should be sealed.
作者
包义才
龙琪
BAO Yi-Cai;LONG Qi(Longhu Branch of Nanjing Jinling Middle School,Nanjing 211500,China;School of Environmental Sciences,Nanjing Xiaozhuang University,Nanjing 211171,China)
出处
《化学教育（中英文）》
CAS
北大核心
2023年第1期120-122,共3页
Chinese Journal of Chemical Education
基金
南京市教育科学研究“十三五”规划课题2020年度课题“项目化学习在初中化学实验教学中的研究”(项目编号:L/2020/375)。
关键词
实验探究
质量守恒定律
数字化实验
experimental inquiry
law of conservation of mass
digital experiment
