摘要
借助NO和NO_2的相关反应,对空气中O_2含量测定的实验进行改进,测得空气中O_2的平均体积分数为21.15%,在实验过程中培养学生从定性到定量的化学思维能力。
This paper improved the experiment of determination of oxygen in air based on the relevant reactions of nitric oxide and nitrogen dioxide,the average volume fraction of oxygen in air was measured 21.15%.In experimental process,the chemical thought from qualitative to quantitative was cultivated.
出处
《化学教育》
CAS
北大核心
2016年第3期74-75,共2页
Chinese Journal of Chemical Education
