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Question:

What is the phenomenon of aluminium wire immersed in copper sulphate solution?

What is the phenomenon of aluminium wire immersed in copper sulphate solution?

Answer:

The reaction principle is: aluminum is more active than copper, so the replacement reaction occurs.
Reaction note: the aluminum wire has a dense film on the surface, so that the active aluminum can not contact the copper ions in the solution, and then the replacement reaction occurs. Therefore, before the reaction, the surface oxide film should be polished off with sand paper and then reacted.
[aluminum wire immersion copper sulfate solution] the specific phenomenon is: aluminum wire dissolved, the surface has red material (copper) precipitation, while the copper sulfate blue solution color is pale.

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