铝盐与氢氧化钠反应生成氢氧化铝沉淀的实验探究  

Experiment Inquiry on the Reaction of Aluminum Salts and Sodium Hydroxide to Produce Aluminum Hydroxide Precipitation

作　　者：李友银[1] 石璞[1] 

机构地区：[1]合肥市第一中学

出　　处：《化学教育》2016年第5期53-55,共3页Chinese Journal of Chemical Education

摘　　要：通过数字实验对Al2（SO4）3溶液与NaOH反应过程中pH的变化进行探究,得出pH与NaOH溶液的体积（V）之间的变化曲线,从而建立铝盐与NaOH溶液反应时,Al（OH）3沉淀的生成与溶解和NaOH量的变化关系。此研究可以改变人们在Al（OH）3两性认识上存在的误区,对中学化学教学起到积极的作用。This paper explored change of pH in the reaction of aluminum sulfate solution and sodium hydroxide through digital experimental method, the change curve between pH and the volume of sodium hydroxide solution was obtained, so the relationship between the amount of so- dium hydroxide and formation and dissolution of aluminum hydroxide precipitation was got. This research could change people＇s misunderstanding on amphoteric aluminum hydroxide, played an active role in the high school chemistry teaching.

关 键 词：铝盐 氢氧化钠 氢氧化铝沉淀 实验探究 

分 类 号：G633.8[文化科学—教育学]