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13问答网 > 次氯酸钙和酸性的碘化钾溶液反应氯为什么被还原成氯离子而不是氯气

次氯酸钙和酸性的碘化钾溶液反应氯为什么被还原成氯离子而不是氯气

2025-03-15 22:11:29

推荐回答（3个）

回答1：

因为氯气的氧化性很强，不仅可以氧化碘离子，甚至可以氧化碘分子。
Cl2 + 2I- = 2Cl- + I2，I2 + 5Cl2 + 6H2O = 2IO3- + 10Cl- + 12H+。

回答2：

因为氯气的氧化性大于碘，它还可以氧碘离子。

回答3：

第七主族中氟氯溴碘氧化性逐渐降低，还原性逐渐增强，I单质的还原性大于cl，所以还原成cl-。

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