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离子共存

> 下列各种情况下一定能大量共存的离子组为 [ ] A．pH=7的溶液中：Fe 3+、Cl -、Na +、NO 3 - B．水电离出的c(H +)=1×10 -3 mol/L，的溶液中：Na +、CO 3 2-、Cl -、K + C．pH=1的溶液中：NH 4 +、Cl -、Mg 2+、SO 4 2- D．Al 3+、HCO 3 -、I -、Ca 2+

问题：

发布时间：2024-09-08

下列各种情况下一定能大量共存的离子组为
[ ]
A．pH=7的溶液中：Fe ³⁺、Cl ^-、Na ⁺、NO ₃ ^-B．水电离出的c(H ⁺)=1×10 ^-3 mol/L，的溶液中：Na ⁺、CO ₃ ^2-、Cl ^-、K ⁺C．pH=1的溶液中：NH ₄ ⁺、Cl ^-、Mg ²⁺、SO ₄ ^2-D．Al ³⁺、HCO ₃ ^-、I ^-、Ca ²⁺

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下列各种情况下一定能大量共存的离子组为 [ ] A．pH=7的溶液中：Fe 3+、Cl -、Na +、NO 3 -B．水电离出的c(H +)=1×10 -3 mol/L，的溶液中：Na +、CO 3 2-、Cl -、K +C．pH=1的溶液中：NH 4 +、Cl -、Mg 2+、SO 4 2- D．Al 3+、HCO 3 -、I -、Ca 2+

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