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铁的氧化物

> 某化学兴趣小组把少量废铁屑溶于过量稀硫酸中，过滤，除去杂质，在滤液中加入适量硝酸，再加入过量的氨水，有红褐色沉淀A生成。再过滤，加热至恒重得到B。对物质A、B该小组有如下四种判断，你认为正确的是（） A. Fe(OH) 3； Fe 2O 3 B. Fe(OH) 2； FeO C. Fe(OH) 3、Fe(OH) 2；Fe 3O 4 D. Fe 2O 3 ；Fe(OH) 3

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发布时间：2024-09-09

某化学兴趣小组把少量废铁屑溶于过量稀硫酸中，过滤，除去杂质，在滤液中加入适量硝酸，再加入过量的氨水，有红褐色沉淀A生成。再过滤，加热至恒重得到B。对物质A、B该小组有如下四种判断，你认为正确的是（    ）
A. Fe(OH) ₃； Fe ₂O ₃              B. Fe(OH) ₂； FeO
C. Fe(OH) ₃、Fe(OH) ₂；Fe ₃O ₄    D. Fe ₂O ₃；Fe(OH) ₃

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