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> 某同学将a g的铁粉加入到VL的FeCl 3和CuCl 2混和溶液中，下列有关现象或结论正确的是　 [ ] A．若反应后没有固体存在，则溶液中一定没有Fe 3+ B．若反应后有固体存在，则溶液中一定没有Cu 2+ C．若反应后溶液中加入KSCN溶液，溶液一定出现红色 D．在反应后溶液中加入氯水，再加入KSCN溶液，溶液一定出现红色

问题：

发布时间：2024-09-10

某同学将a g的铁粉加入到VL的FeCl ₃和CuCl ₂混和溶液中，下列有关现象或结论正确的是　
[ ]
A．若反应后没有固体存在，则溶液中一定没有Fe ³⁺
B．若反应后有固体存在，则溶液中一定没有Cu ²⁺
C．若反应后溶液中加入KSCN溶液，溶液一定出现红色
D．在反应后溶液中加入氯水，再加入KSCN溶液，溶液一定出现红色

参考答案：

提问用户：wc***gxB

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