Abstract Through experiments and detection methods with XPS, it is found that SO2 can not only oxidize elemental copper to +1 valent copper compound in hydrochloric acid, but also can reduce Cu2+ to +1 valent copper compound in hydrochloric acid, and the oxidation and reduction processes require Cl- to participate, and the reaction mechanism needs to be further explored through the reaction of SO2 and FeCl3 solution (I- catalysis). The several exploratory experiments are easy to operate and observe, and have significant experimental characterization, it is helpful for us to go from the macroscopic identification to the microscopic analysis.
LI Dao-Bing, ZHANG Ren-Bo, FANG Shi-Cui, WANG Mian, PENG Zhi-Yong. Exploring the Reaction of Sulfur Dioxide with Elemental Copper, Divalent Copper Ion and Ferric Chloride Solution in Hydrochloric Acid[J]. Chinese Journal of Chemical Education, 2022, 43(7): 93-95.
