why does the color of copper sulphate solution changes when an iron nail is dipped in it for some time
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Explanation:
the copper nail changes colordue to rust
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YOUR ANSWER MATE
Explanation:
When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.
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