下列电离方程式正确的是（） A．HNO3=H++3NO B．Ba（OH）2=B

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问题选择题

下列电离方程式正确的是（　　）

A．HNO₃=H⁺+3NO

B．Ba（OH）₂=Ba²⁺+2OH^-

C．K₂CO₃=K₂⁺+CO₃^2-

D．CuSO₄=Cu⁺²+SO₄^2-

答案

A、硝酸根离子符号书写错误，正确的是：HNO₃=H⁺+NO₃^-

B、正确．

C、钾离子符号书写错误，正确的是：K₂CO₃=2K⁺+CO₃^2-

D、铜离子符号书写错误，正确的是：CuSO₄=Cu²⁺+SO₄^2-

故选B

阅读理解

阅读理解。

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