内容正文:
铁及其化合物
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2、铁的氧化物
Fe3+ + 3SCN- = Fe(SCN)3 (血红色)
3、铁的氢氧化物
4、检验Fe3+和Fe2+
5、Fe3+和Fe2+的相互转化
三、铁及其化合物
知识回顾
3Fe2++ 2[Fe(CN)6]3-=Fe3 [Fe(CN)6] (蓝色)
1、铁的单质
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美剧《绝命毒师》
铝热剂:
铁的氧化物粉末+铝粉
老白用的铁的氧化物粉末从哪来的?
是什么颜色的?
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Fe3O4中铁的化合价为正几价?
Fe3+ Fe2+
从实验盒中找到Fe3O4粉末,并思考怎样检验其中的Fe3+和Fe2+?
直接检验粉末
溶解以后检验
实验一:用药匙取绿豆体积大小Fe3O4粉末于1号试管中,加入6ml左右硫酸后振荡
Fe3O4中Fe3+与Fe2+的检验
溶解Fe3O4粉末
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