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镁燃烧不需要氧气吗?

更新时间: 2021-01-11 04:20:48     

1、燃烧不一定要氧气,只要有氧化剂就可以,因为镁化学性质活泼,所以能和许多物质反应。

2、2Mg+CO2=2MgO+C。

3、3Mg+N2=Mg3N2。

4、2Mg+O2=2MgO。

5、所以镁在空气中实际上发生三个反应,镁燃烧也不能用CO2扑灭。

关键词: 燃烧 需要 氧气

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