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半反应

半反应一般是指氧化还原反应氧化还原反应的一部分。一个半反应是通过考虑参与氧化还原反应的个别物质氧化态的变化。[1]

例子

考虑下面的反应:

Cl2 + 2Fe2+ → 2Cl + 2Fe3+

涉及的两个元素氧化态变化; 铁从2+变成3+, 氯从0变成1−。有效的使两个反应发生。每个半反应中,都应该插入相应的电子,可由下面两个半反应示来表示上面的反应:

Fe2+ → Fe3+ + e
Cl2 + 2e → 2Cl

以同样的方式指定的两个半反应是可以的。[1]

电化电池

其他相关领域

光分解反应也可以称作半反应(光分解动态学 ,photodissociation dynamics,参考光分解离子成像)。

参考文献

  1. ^ 1.0 1.1 Davis, Raymond; Sarquis, Mickey; Frey, Regina; Sarquis, Jerry. 19. Modern Chemistry. Holt, Rinehart, and Winston. 2006: 933–935 [27 May 2010]. ISBN 0030735467. 
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半反应
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