我觉得A是Fe2O3,B是Fe3O4,C是FeO,D是Fe,E是O2
2:FeO+H2=Fe+H2O 2FeO+C=2Fe+CO2 FeO+CO=Fe+CO2
4:唔,第四个应该是FeO放出O2?我初中没学过。。。
6:6FeO+O2=2Fe3O4
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