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Anonymous users2024-01-24(1) Applying paint can make the iron no longer contact with water and oxygen in the air, and can not continue to be corroded;
2) Carbon monoxide reacts with iron oxide at high temperature to form iron and carbon dioxide, and the chemical equation is 3CO+Fe2O3
High temperatures2Fe+3CO2；
3) According to the active iron, hydrogen and copper of the metal, the added iron powder reacts with sulfuric acid and copper sulfate, and the chemical equation is Fe+CuSO4 Cu+FeSO4, Fe+H2SO4 FeSO4+H2; After the full reaction, the solids are filtered and separated to obtain a mixture of iron and copper;
So the answers are: 1) oxygen and water;
2）3CO+Fe2O3
High temperatures2Fe+3CO2；
3）Fe+CuSO4═Cu+FeSO4；Fe+H2SO4═FeSO4+H2↑；Filtration; Fe Cu．
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Anonymous users2024-01-23Õ¹¿O3 <>
2Fe+3CO2
Cu+FeSO4
Fe+H2SO4FeSO4
O3 <>
2Fe+3CO2
TCu+FeSO4
¢Fe+H2
SO4¨TFeSO4+H2
O3 <>
2Fe+3CO2
TCu+FeSO4
»Fe+H2
SO4¨TFeSO4
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