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离子共存

> 下列各组离子可能大量共存的是 [ ] A．pH=1的溶液中：Fe 2+、Al 3+、HCO 3 -、MnO 4 - B．能与金属铝反应放出氢气的溶液：K +、NO 3 -、Cl -、NH 4 + C．含有大量OH -的无色溶液中：Na +、Cu 2+、Al 3+、SiO 3 2- D．常温下水电离出的c(H +)·c(OH -)=10 -20的溶液中：Na +、C1 -、S 2-、SO 3 2-

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发布时间：2024-09-11

下列各组离子可能大量共存的是
[ ]
A．pH=1的溶液中：Fe ²⁺、Al ³⁺、HCO ₃ ^-、MnO ₄ ^-B．能与金属铝反应放出氢气的溶液：K ⁺、NO ₃ ^-、Cl ^-、NH ₄ ⁺C．含有大量OH ^-的无色溶液中：Na ⁺、Cu ²⁺、Al ³⁺、SiO ₃ ^2-D．常温下水电离出的c(H ⁺)·c(OH ^-)=10 ^-20的溶液中：Na ⁺、C1 ^-、S ^2-、SO ₃ ^2-

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