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朱星星

银虫 (小有名气)

[求助] 二价铜能氧化二价铁吗?

我知道Fe(Ⅲ)可以氧化铜单质,原则上Fe(Ⅲ)也可以氧化Cu(Ⅰ),对吧?因为Fe(Ⅲ)/Fe(Ⅱ)的标准电极电位为0.77,Cu(Ⅱ)/Cu(Ⅰ)的标准电极电位为0.153。
       我想问的是,如果都用惰性电极,根据能斯特方程,如果Fe(Ⅱ)浓度远远高于Fe(Ⅲ),则Fe(Ⅲ)/Fe(Ⅱ)的实际相对电极电位会降低很多,同理,Cu(Ⅱ)的浓度远远高于Cu(Ⅰ),则Cu(Ⅱ)/Cu(Ⅰ)的相对电极电位会上升很多。如果这样,Cu(Ⅱ)/Cu(Ⅰ)电极电势可能会高于Fe(Ⅲ)/Fe(Ⅱ)电极电势,那Cu(Ⅱ)就可以氧化Fe(Ⅱ)了。
       我不知道哪里出错了?请大家指教!
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