Question

What do we observe when iron nails are added to copper sulphate solution

Answer 1

when iron nail is added to copper sulphate solution its colour changes from blue to green
Reaction are as follows
Fe+CuSO4 ------- FeSO4 + Cu

Answer 2

Fe + CuSO4 ----------> FeSO4 + Cu
Since fe is more reactive
Displacement reaction..

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