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离子共存

> 在下列溶液中，各组离子一定能够大量共存的是（　　） A．含有较多Fe3+的溶液：NH4+、K+、SCN-、AlO2- B．水电离的c（H+）=1×10-12mol/L的溶液：Na+、Al3+、Br-、ClO- C．呈中性的无色溶液：Cu2+、Al3+、NO3-、Cl- D．pH=2的溶液：Fe3+、Cu2+、SO42-、NO3-

问题：

发布时间：2024-09-11

在下列溶液中，各组离子一定能够大量共存的是（　　）

A．含有较多Fe³⁺的溶液：NH₄⁺、K⁺、SCN^-、AlO₂^-

B．水电离的c（H⁺）=1×10^-12mol/L的溶液：Na⁺、Al³⁺、Br^-、ClO^-

C．呈中性的无色溶液：Cu²⁺、Al³⁺、NO₃^-、Cl^-

D．pH=2的溶液：Fe³⁺、Cu²⁺、SO₄^2-、NO₃^-

参考答案：

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