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离子共存

> 常温下，下列溶液中可能大量共存的离子组是 [ ] A．含有大量S 2-的溶液：Na +、ClO -、Cl -、CO 3 2- B．含有大量Fe 3+的溶液：K +、Na +、AlO 2 -、SO 4 2- C．能使pH试纸变红的溶液：NH 4 ＋、Na ＋、NO 3 -、HCO 3 - D．水电离产生的c(H ＋)＝1×10 －12mol/L的溶液：Mg 2+、SO 4 2-、NO 3 -、Cl -

问题：

发布时间：2024-09-12

常温下，下列溶液中可能大量共存的离子组是
[ ]
A．含有大量S ^2-的溶液：Na ⁺、ClO ^-、Cl ^-、CO ₃ ^2-
B．含有大量Fe ³⁺的溶液：K ⁺、Na ⁺、AlO ₂ ^-、SO ₄ ^2-
C．能使pH试纸变红的溶液：NH ₄ ^＋、Na ^＋、NO ₃ ^-、HCO ₃ ^-
D．水电离产生的c(H ^＋)＝1×10 ^－12mol/L的溶液：Mg ²⁺、SO ₄ ^2-、NO ₃ ^-、Cl ^-

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