搜索 - 科创

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初步结论，硝酸在与钴（有资料显示其它部分金属也有该现象）反应时发生单电子还原反应，硝酸根离子被还原为铵根离子。

铜离子很容易得电子，尤其是得到单电子形成d10稳定构型，可见对单电子还原的敏感性（铜离子到亚铜是+0.153V，铜离子到铜单质+0.337V，亚铜离子到铜单质是+0.521V）。

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