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离子共存

> 在给定条件的水溶液中一定能大量共存的离子组是 [ ] A．能与Al反应生成H 2的溶液：Ca 2+、NH 4 +、HCO 3 -、Cl - B．c(Fe 2+)=0.05mol/L的溶液：H +、Na +、NO 3 -、SO 4 2- C．pH=12的溶液：Na +、K +、Cl -、NO 3 - D．由水电离出的c(H +)＝10 -12mol/L的溶液：K +、Ba 2+、ClO -、CO 3 2-

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发布时间：2024-09-13

在给定条件的水溶液中一定能大量共存的离子组是
[ ]
A．能与Al反应生成H ₂的溶液：Ca ²⁺、NH ₄ ⁺、HCO ₃ ^-、Cl ^-
B．c(Fe ²⁺)=0.05mol/L的溶液：H ⁺、Na ⁺、NO ₃ ^-、SO ₄ ^2-C．pH=12的溶液：Na ⁺、K ⁺、Cl ^-、NO ₃ ^-D．由水电离出的c(H ⁺)＝10 ^-12mol/L的溶液：K ⁺、Ba ²⁺、ClO ^-、CO ₃ ^2-

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