题干

某兴趣小组在实验室中模拟炼铁化学原理的实验,对固体产物成分等进行探究。

【设计实验】用一氧化碳还原纯净的氧化铁粉末,实验装置如下图。


【进行实验】该小组按上述实验设计,在一定温度下进行了实验,测得下列数据:

①反应前玻璃管和内盛氧化铁粉末的总质量66.0g(玻璃管的质量为60.0g)

②反应后玻璃管和内盛黑色固体的总质量65.8g(冷却到室温称量)

【分析与讨论】本实验中,玻璃管内固体粉末由红色全部变为黑色。小明同学认为该黑色固体全部是铁,但小华同学提出了质疑,于是大家提出查阅资料。

【查阅资料】

① C O还原Fe2O3的固体产物的成分与反应温度、反应时间等因素有关

② CO还原Fe2O3的实验过程中固体产物可能有Fe3 O4、FeO、Fe

③ NaOH溶液与石灰水相似,能吸收CO2,但不变浑浊

物质性质

四氧化三铁

氧化亚铁

氧化铁

铁粉

颜色

黑色

黑色

红色

黑色

能否被磁铁吸引

不能

不能


【实验与猜想】

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根据短文理解,选择正确答案。The British Museum
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    Although many parts of Asia have long been connected through trade along Silk Road and shared religious systems, there are strong regional differences. In addition to various languages, Asia has developed its cultural networks, patterns of government, technology and styles of artistic representation.
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