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离子共存

> 常温下，下列溶液中一定能大量共存的离子组是 [ ] A．在pH＝1的溶液中：Na ＋、Fe 2＋、Cl －、NO 3 － B．在pH＝7的溶液中：Fe 3＋、Mg 2＋、Cl －、NO 3 － C．由水电离出的c(H ＋)＝10 －14 mol/L溶液中：Na ＋、K ＋、SO 4 2－、NO 3 － D．在无色透明溶液中：Al 3＋、Na ＋、Cl －、S 2－

问题：

发布时间：2024-09-07

常温下，下列溶液中一定能大量共存的离子组是
[ ]
A．在pH＝1的溶液中：Na ^＋、Fe ^2＋、Cl ^－、NO ₃ ^－
B．在pH＝7的溶液中：Fe ^3＋、Mg ^2＋、Cl ^－、NO ₃ ^－
C．由水电离出的c(H ^＋)＝10 ^－14 mol/L溶液中：Na ^＋、K ^＋、SO ₄ ^2－、NO ₃ ^－
D．在无色透明溶液中：Al ^3＋、Na ^＋、Cl ^－、S ^2－

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