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离子共存

> 下列各组离子：①I -、ClO -、NO 3 -、H +；②K +、NO 3 -、HCO 3 -、OH -；③SO 4 2-、CO 3 2-、Cl -、OH -；④Fe 3+、Cu 2+、SO 4 2-、Cl -；⑤OH -、CO 3 2-、K +、H +；⑥Ca 2+、Na +、SO 4 2-、CO 3 2-．在水溶液中能大量共存的是（　　） A．①⑥ B．③④ C．②⑤ D．①④

问题：

发布时间：2024-09-07

下列各组离子：①I ^-、ClO ^-、NO ₃ ^-、H ⁺；②K ⁺、NO ₃ ^-、HCO ₃ ^-、OH ^-；③SO ₄ ^2-、CO ₃ ^2-、Cl ^-、OH ^-；④Fe ³⁺、Cu ²⁺、SO ₄ ^2-、Cl ^-；⑤OH ^-、CO ₃ ^2-、K ⁺、H ⁺；⑥Ca ²⁺、Na ⁺、SO ₄ ^2-、CO ₃ ^2-．在水溶液中能大量共存的是（　　）

A．①⑥ B．③④ C．②⑤ D．①④

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