在0.05mol/L的HCN中，若有0.01%的HCN电离了，则HCN的解离常数Ka为( )。A. 5×10-8 B. 5×10-10 C. 5×10...

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问题在0.05mol/L的HCN中，若有0.01%的HCN电离了，则HCN的解离常数Ka为( )。

选项 A. 5×10-8 B. 5×10-10 C. 5×10-6 D. 2.5×10-7

答案 B

解析

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