铁在氧气中燃烧_____________________________________________
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铁在氧气中燃烧_____________________________________________
现象_________________________________________________________
氢氧化钠溶液与硫酸铜溶液反应__________________________________
现象_________________________________________________________
现象_________________________________________________________
氢氧化钠溶液与硫酸铜溶液反应__________________________________
现象_________________________________________________________
![铁在氧气中燃烧_____________________________________________](/uploads/image/z/8323651-19-1.jpg?t=%E9%93%81%E5%9C%A8%E6%B0%A7%E6%B0%94%E4%B8%AD%E7%87%83%E7%83%A7_____________________________________________)
3Fe + 2O2 = Fe3O4
火花四射,之后发现黑色凝固体
2NaOH + CuSO4 = Na2SO4 + Cu(OH)2
蓝色消退,沉淀
火花四射,之后发现黑色凝固体
2NaOH + CuSO4 = Na2SO4 + Cu(OH)2
蓝色消退,沉淀