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22 天
初中化学复习必看:36个易错反应方程式詳解
现象:电极上出现气泡,气体体积比约为1:2。 知识点:在此反应中,正极产生氧气,负极产生氢气,注意水的导电性可以通过加入NaOH或稀硫酸来增强。 现象:白色粉末CaO溶解,放出大量热。 知识点:最终获得的氢氧化钙溶液被称为澄清石灰水。 平台声明:该文观点 ...
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