基于手持技术探究硝酸氧化性变化的浓度临界值  

Exploration of Concentration Threshold Value of Nitric Acid Oxidation Change by Handheld Technology

作　　者：王国良 廖志刚[2] 肖定松 刘凯馨 WANG Guo-Liang;LIAO Zhi-Gang;XIAO Ding-Song;LIU Kai-Xin(College of Teacher Education,Harbin Normal University,Harbin 150025,China;College of Chemistry and Chemical Engineering,Harbin Normal University,Harbin 150025,China;Fuzhou Chaode Middle School,Fuzhou 350107,China;Harbin Federation of Trade Unions,Harbin 150000,China)

机构地区：[1]哈尔滨师范大学教师教育学院,黑龙江哈尔滨150025 [2]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025 [3]福州超德中学,福建福州350107 [4]哈尔滨市总工会,黑龙江哈尔滨150000

出　　处：《化学教育（中英文）》2024年第3期109-113,共5页Chinese Journal of Chemical Education

基　　金：中国教育学会2021年度教育科研规划(一般)课题(项目编号:202177012501B);黑龙江省高等教育教学改革项目(项目编号:SJGY20200367);2023年度哈尔滨师范大学高等教育教学改革项目(项目编号:XJGZ2023003);研究生教育教学改革重点项目;研究生培养与质量提升工程课程建设项目。

摘　　要：硝酸是帮助学生理解强氧化性的重要物质,其溶液的浓稀又是区分“氧化性”强弱的重要量度。利用电导率传感器和氧气传感器,探寻硝酸氧化性变化的浓度临界值,并从反应机理、分子结构及电化学角度对其进行分析、解释,旨在帮助学生更加直观、准确、深入地把握硝酸氧化性变化,以期从量的角度帮助建立强氧化性认知模型结构。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.

关 键 词：硝酸 临界值 氧化性 手持技术 相对性 

分 类 号：G633.8[文化科学—教育学]