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_________________________________________________________
问题描述:
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_________________________________________________________
答
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