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为什么只有碳氢氧组成的方酸是强酸

更新时间: 2021-02-21 17:56:58     

1、方酸pk1=1.5是中强酸(有文献指出是0.48),酸性强于硫酸氢根的1.99而不是硫酸的-3,半方酸(C4H2O3)才是强酸pk=0.88。之所以是酸性强,是因为酸根符合休克尔规则,具有芳香性,如不电离氢离子或酸根水解都会导致破坏芳香性。

关键词: 为什么 只有 碳氢 组成 强酸

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