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离子共存

> 常温下，下列各组溶液中的离子一定能大量共存的是 [ ] A．中性溶液中：K +、Al 3+、Cl -、HCO 3 - B．强碱性溶液中：ClO -、Ca 2+、Mg 2+、NO 3 - C．pH=2的溶液中：Fe 2+、SO 4 2-、K +、NO 3 - D．酸性溶液中：NH 4 +、Cl -、Na +、SO 4 2-

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发布时间：2024-09-09

常温下，下列各组溶液中的离子一定能大量共存的是
[ ]
A．中性溶液中：K ⁺、Al ³⁺、Cl ^-、HCO ₃ ^-B．强碱性溶液中：ClO ^-、Ca ²⁺、Mg ²⁺、NO ₃ ^-C．pH=2的溶液中：Fe ²⁺、SO ₄ ^2-、K ⁺、NO ₃ ^-
D．酸性溶液中：NH ₄ ⁺、Cl ^-、Na ⁺、SO ₄ ^2-

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