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_______________________________________

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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_______________________________________
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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_______________________________________
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_________________________________________________________

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_______________________________________
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