计算浓度为0.1mol的NH4CN溶液的pH值 - 百度知道
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计算浓度为0.1mol的NH4CN溶液的pH值 我来答 可选中1个或多个下面的关键词,搜索相关资料。也可直接点“搜索资料”搜索整个问题。
- 溶液
- nh4cn
- ph
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展开全部 NH3 Kb=10^-4.75,对应共轭酸NH4- K(NH4-)=10^-9.25,HCN Ka=10^-9.21根据弱酸弱碱pH计算公式有:[H+]={K(NH4-)×Ka}^½={10^-9.25×10^-9.21}^½=10^-9.23pH=9.23 Từ khóa » Nh4cn Ph
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