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离子共存

> 在下列给定条件的各溶液中，一定能大量共存的离子组是 [ ] A．含有0.1mol/LFe 3+的溶液中：K +、Mg 2+、SCN -、NO 3 - B．室温下 = 10 -13 mol/L的溶液中：Na +、Mg 2+、NO 3 -、SO 4 2- C．加入Al能放出H 2的溶液中：NH 4 +、K +、Cl -、HCO 3 - D．在H +、Na +、SO 4 2-浓度均为0.1mol/L的溶液中：K +、C 6H 5O -、Cl -、HCOO -

问题：

发布时间：2024-09-12

在下列给定条件的各溶液中，一定能大量共存的离子组是
[ ]
A．含有0.1mol/LFe ³⁺的溶液中：K ⁺、Mg ²⁺、SCN ^-、NO ₃ ^-
B．室温下 = 10 ^-13 mol/L的溶液中：Na ⁺、Mg ²⁺、NO ₃ ^-、SO ₄ ^2-
C．加入Al能放出H ₂的溶液中：NH ₄ ⁺、K ⁺、Cl ^-、HCO ₃ ^-
D．在H ⁺、Na ⁺、SO ₄ ^2-浓度均为0.1mol/L的溶液中：K ⁺、C ₆H ₅O ^-、Cl ^-、HCOO ^-

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