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离子共存

> 下列说法正确的是 [ ] A.使紫色石蕊试液变红的溶液中：Fe 2+、Cu 2+、Cl -、NO 3 -能够大量共存 B.加入铝粉放出H 2的溶液中：Na +、Mg 2+、HCO 3 -、SO 4 2-不能大量共存 C.常温下，醋酸钠与醋酸的混合溶液pH=7：则c(Na +)=c(CH 3COO -) D.0.1 mol/L NaHCO 3溶液中：c(Na +)=c(HCO 3 -)+2c(CO 3 2-)+c(H 2CO 3)

问题：

发布时间：2024-09-10

下列说法正确的是
[ ]
A.使紫色石蕊试液变红的溶液中：Fe ²⁺、Cu ²⁺、Cl ^-、NO ₃ ^-能够大量共存
B.加入铝粉放出H ₂的溶液中：Na ⁺、Mg ²⁺、HCO ₃ ^-、SO ₄ ^2-不能大量共存
C.常温下，醋酸钠与醋酸的混合溶液pH=7：则c(Na ⁺)=c(CH ₃COO ^-)
D.0.1 mol/L NaHCO ₃溶液中：c(Na ⁺)=c(HCO ₃ ^-)+2c(CO ₃ ^2-)+c(H ₂CO ₃)

参考答案：

提问用户：mM***NFi

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