Exploration of Concentration Threshold Value of Nitric Acid Oxidation Change by Handheld Technology
WANG Guo-Liang1, LIAO Zhi-Gang2**, XIAO Ding-Song3, LIU Kai-Xin4
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. Fuzhou Chaode Middle School, Fuzhou 350107, China; 4. Harbin Federation of Trade Unions, Harbin 150000, China
Abstract Nitric acid is an important substance that helps students understand strong oxidizing properties, and the concentration of its solution is an important measure to distinguish the strength of oxidizing properties. Using conductivity sensors and oxygen sensors, this paper explored the concentration threshold of nitric acid oxidation change. The analysis and interpretation of the reaction mechanism, molecular structure and electrochemistry were presented. The aim was to help students to grasp the oxidative change of nitric acid more visually, accurately and deeply, and to help establish a strong oxidative cognitive model structure from a quantitative perspective.
WANG Guo-Liang, LIAO Zhi-Gang, XIAO Ding-Song, LIU Kai-Xin. Exploration of Concentration Threshold Value of Nitric Acid Oxidation Change by Handheld Technology[J]. Chinese Journal of Chemical Education, 2024, 45(3): 109-113.
