Experimental Inquiry Teaching Based on Real-Life Situations and Problem Orientation: Reaction of Copper Ions, Ferrous Ions and Potassium Thiocyanide Systems
HAN Xiao-Yu1*, FAN Xiao-Qing1, AN Jin-Li2, WANG Lei3
1. Beijing Pinggu Mafang Experimental Middle School, Beijing 101200, China; 2. Beijing Experimental School, Beijing 101200, China; 3. Beijing Normal University Jining District Secondary School, Jining 012000, China
Abstract Students investigate whether potassium thiocyanate solution can be used to test for the presence of trivalent iron ions in the “copper corrosion solution”, using the white precipitate generated in the reaction system after adding potassium thiocyanate solution to the corrosion liquid as the research object. They conduct a thorough and systematic analysis based on microparticles, exploring the source, composition, formation rate, and reaction process of the white precipitate.
HAN Xiao-Yu, FAN Xiao-Qing, AN Jin-Li, WANG Lei. Experimental Inquiry Teaching Based on Real-Life Situations and Problem Orientation: Reaction of Copper Ions, Ferrous Ions and Potassium Thiocyanide Systems[J]. Chinese Journal of Chemical Education, 2025, 46(23): 101-104.
