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氮气是如何提取的
更新时间: 2020-10-04 00:00:00  

1、先将空气加压降温变成液态空气, 利用氧气与氮气的沸点不同(沸点氮气高于氧气),来分离氧气与氮气。把氮气蒸发出来。(此法称为“分离液态空气法”。)

2、第二种将空气通过灼热的煤层,再除去二氧化碳,得到氮气。

3、NH4NO2=(加热)=2H2O+N2

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