镁、铝与碳酸钠溶液反应的差异性研究  

Difference Between Magnesium and Aluminum Reacting with Sodium Carbonate Solution

作　　者：沈彩娣 吴文中 SHEN Cai-Di;WU Wen-Zhong(Hangzhou Changhe High School,Hangzhou 310052,China;Zhejiang Yuezhou High School,Shaoxing 312075,China)

机构地区：[1]杭州市长河高级中学,浙江杭州310052 [2]浙江省越州中学,浙江绍兴312075

出　　处：《化学教育（中英文）》2019年第21期86-89,共4页Chinese Journal of Chemical Education

摘　　要："镁|NaOH(aq)|铝"所形成的原电池,反应开始镁电极为负极,几秒钟后铝电极为负极,其原因是什么?从原电池形成理论以及通过对Mg和Al分别与饱和Na2CO3溶液反应的热力学和动力学分析角度,详细阐述上述原电池电极性质发生反转的理论基础,体验原电池反应与氧化还原反应在微观层面无实质性差异的事实。At the beginning of the reaction in the primary battery of "Mg|NaOH(aq)|Al", magnesium was the negative electrode, then aluminum turned into negative electrode after a few seconds. Based on the formation theory of primary battery and the analysis of the reaction of saturated sodium carbonate solution with magnesium and aluminum respectively by thermodynamic and dynamics, this paper explained the theoretical basis for the reversal of the primary battery electrode properties, and presented that there was no substantive difference between primary battery reaction and oxidation-reduction reaction at the micro level.

关 键 词：氧化还原反应 铝电极 碳酸钠溶液 原电池反应 电池电极 差异性研究 负极 分析角度 

分 类 号：O6[理学—化学]