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> 下列溶液中，一定能大量共存的微粒组是 [ ] A．pH=1的溶液中：K +、Cr 2O 7 2-、CH 3CH 2OH、SO 4 2- B．含有大量Fe 3+的溶液中：Al 3+、Cu 2+、Cl -、SO 4 2- C．加入Al能放出H 2的溶液中：K +、NH 4 +、NO 3 -、Cl - D．滴加紫色石蕊试液变红的溶液中：K +、Ba 2+、NO 3 -、F -

问题：

发布时间：2024-09-12

下列溶液中，一定能大量共存的微粒组是
[ ]
A．pH=1的溶液中：K ⁺、Cr ₂O ₇ ^2-、CH ₃CH ₂OH、SO ₄ ^2-
B．含有大量Fe ³⁺的溶液中：Al ³⁺、Cu ²⁺、Cl ^-、SO ₄ ^2-C．加入Al能放出H ₂的溶液中：K ⁺、NH ₄ ⁺、NO ₃ ^-、Cl ^-D．滴加紫色石蕊试液变红的溶液中：K ⁺、Ba ²⁺、NO ₃ ^-、F ^-

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