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82问答网 > Mg、AI、NaOH溶液构成的原电池为什么AI是负极？

Mg、AI、NaOH溶液构成的原电池为什么AI是负极？

2025-04-01 02:55:42

推荐回答（2个）

回答1：

因为AL是两性元素，能与氢氧化钠反应。所以当是氢氧化钠溶液的时候，AL会和氢氧化钠反应失去电子，根据原电池的概念，AL失去电子就是负极了

回答2：

首先要知道铝是可以和酸和强碱反应的。
铝与氢氧化钠反应生成了偏铝酸钠NaAlO2里面的Al变成了+3价，被氧化。所以铝肯定是做负极的。

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