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金属钠与水反应
更新时间: 2021-04-17 05:51:00  

1、钠浮在水面上(钠的密度比水小),钠在水面上迅速游动,并有轻微的嘶嘶声(生成的H2推动钠游动),钠融成一个小球反应后溶液中滴入酚酞,变红(生成了NaOH),生成的气体可点燃,有爆鸣声(生成了H2)。

2、2Na+2H2O=2(Na+)+2(OH-)+H2(气体)。

关键词: 金属 反应

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