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离子共存

> 下列各组离子在相应的条件下可以大量共存的是 [ ] A．在碱性溶液中：CO 3 2-、K +、Cl -、Na + B．与铝粉反应放出氢气的无色溶液中：NO 3 -、Mg 2+、Na +、HCO 3 - C．在c(H +)/c(OH -)=1×10 -12的溶液中：NH 4 +、Ca 2+、Cl -、K + D．在酸性溶液中：Fe 2+、Na +、NO 3 -、Cl -

问题：

发布时间：2024-09-08

下列各组离子在相应的条件下可以大量共存的是
[ ]
A．在碱性溶液中：CO ₃ ^2-、K ⁺、Cl ^-、Na ⁺B．与铝粉反应放出氢气的无色溶液中：NO ₃ ^-、Mg ²⁺、Na ⁺、HCO ₃ ^-
C．在c(H ⁺)/c(OH ^-)=1×10 ^-12的溶液中：NH ₄ ⁺、Ca ²⁺、Cl ^-、K ⁺D．在酸性溶液中：Fe ²⁺、Na ⁺、NO ₃ ^-、Cl ^-

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