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亚硫酸氢钠为什么显酸性

2025-03-15 22:56:15

推荐回答（1个）

回答1：

H2SO3的 Ka1=1.54×10^-2 ，K2=1.02×10^-7，NaHSO3，HSO3-的电离Ka2=1.02×10^-7，HSO3-的水解常数Kh=Kw/Ka1=6.5x10^-13，HSO3-电离出H+，水解出OH-，电离常数大于水解常数，说电离出的H+大于水解出的OH-，电离大于水解，显酸性

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