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离子共存

> 下列各溶液中一定能大量共存的离子组是 [ ] A．加入铝粉有氢气生成的溶液中：Mg 2+、Cu 2+、SO 4 2-、K + B．使pH试纸呈红色的溶液中：Fe 2+、I -、NO 3 -、Cl - C．常温下，c(H +)＝10 -14mol/L的溶液中：Na +、AlO 2 -、S 2-、SO 3 2- D．常温下，水电离出的c(H +)与c(OH -)乘积为10 -28的溶液中：K +、Na +、HCO 3 -、Ca 2+

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发布时间：2024-09-10

下列各溶液中一定能大量共存的离子组是
[ ]
A．加入铝粉有氢气生成的溶液中：Mg ²⁺、Cu ²⁺、SO ₄ ^2-、K ⁺B．使pH试纸呈红色的溶液中：Fe ²⁺、I ^-、NO ₃ ^-、Cl ^-C．常温下，c(H ⁺)＝10 ^-14mol/L的溶液中：Na ⁺、AlO ₂ ^-、S ^2-、SO ₃ ^2-D．常温下，水电离出的c(H ⁺)与c(OH ^-)乘积为10 ^-28的溶液中：K ⁺、Na ⁺、HCO ₃ ^-、Ca ²⁺

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