0.1 mol/L NaHCO3溶液的pH最接近于(  )A.5.6                B

0.1 mol/L NaHCO3溶液的pH最接近于(  )

A.5.6                B.7.0

C.8.4                D.13.0

 

答案

C

解析:在NaHCO3溶液中既有水解平衡,也有电离平衡,但由于水解程度大于电离程度,所以溶液显弱碱性,因此答案是C。

 

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