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离子共存

> 常温下，下列溶液中一定能大量共存的离子组是（　　） A．含有大量S2-的溶液：ClO-、Na+、Cl-、CO32- B．无色澄清溶液：MnO4-、SO42-、K+、Fe3+ C．能使pH试纸变红的溶液：NH4+、Na+、SO42-、Fe3+ D．水电离产生的c（H+）=1×10-12mol/L的溶液：HCO3-、NH4+、Cl-、Ca2+

问题：

发布时间：2024-09-09

常温下，下列溶液中一定能大量共存的离子组是（　　）

A．含有大量S^2-的溶液：ClO^-、Na⁺、Cl^-、CO₃^2-

B．无色澄清溶液：MnO₄^-、SO₄^2-、K⁺、Fe³⁺

C．能使pH试纸变红的溶液：NH₄⁺、Na⁺、SO₄^2-、Fe³⁺

D．水电离产生的c（H⁺）=1×10^-12mol/L的溶液：HCO₃^-、NH₄⁺、Cl^-、Ca²⁺

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