Abstract Redox reaction is a vital section in high school chemistry course framework, which connects the knowledge of structure and property, transformations and energy transfer tightly. When analyzing a redox reaction, the most important thing is to identify the electron transfer in the reactants, and then to determine the reasonable energy exchange during the reaction. We find it is a common difficulty for beginners or even senior students to apply redox reaction in a novel circumstance. Herein, we show how to use the Frost diagram to analyze redox reactions that involve several tricky elements including Fe, Mn, N, S and Cl. We compare the electron transfer process with skiing, to elucidate the variation of reactants and energy in a spontaneous reaction. We assume it is a powerful strategy for high school chemistry teachers and students to analyze the redox reactions more effectively and understand the transformations in a more comprehensive and dynamic perspective.
WANG Fang-Xin, YE Zi-Ming. Comprehensive and Dynamic Perspective to Study Redox Reactions by Energy Exchange[J]. Chinese Journal of Chemical Education, 2023, 44(21): 74-79.
