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rong ye zhong ya xiao suan na yu dian hua jia fan ying de shi yan tan jiu
Author(s): 
Pages: 72-73
Year: Issue:  12
Journal: Education in Chemistry

Keyword:  亚硝酸钠与碘化钾反应溶液反应演示实验实验探究;
Abstract: 通过改变反应物浓度、控制溶液的酸碱性,利用对比实验,对溶液中亚硝酸钠与碘化钾反应的条件和I2、NO的检验的课堂演示方法进行了探究.得出的结论是,亚硝酸钠只有在酸性条件下才能氧化碘化钾,使湿润的淀粉KI试纸变蓝.利用注射器作反应器,课堂演示该实验,能达到兼顾NO、I2的检验和良好观察效果的目的.
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