Exploring Reaction Mechanism of “Electrode Inversion” Dual Model of Galvanic Cells Using Handheld Technology
WANG Guo-Liang1, LIAO Zhi-Gang2**, LIU Kai-Xin3
1. College of Teacher Education, Harbin Normal University, Harbin 150025, China; 2. College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China; 3. Harbin No.1 Senior High School, Harbin 150010, China
Abstract This paper was based on handheld technology to characterize the differences in the working principles between the reference state and extreme state of primary batteries, then explored the critical value of nitric acid concentration in the electrode reversal of the two extreme galvanic cells composed of iron and aluminum respectively with copper in concentrated nitric acid. Through the two-model comparison experiment, it helped students construct the galvanic cell model more intuitively, accurately and deeply, and enriched students’ cognition and understanding of the correlation knowledge such as the periodic law of elements, metal activity and redox reaction.
WANG Guo-Liang, LIAO Zhi-Gang, LIU Kai-Xin. Exploring Reaction Mechanism of “Electrode Inversion” Dual Model of Galvanic Cells Using Handheld Technology[J]. Chinese Journal of Chemical Education, 2023, 44(21): 92-96.
