An iron nail was placed in an unknown solution for couple of hours a reddish brown coating is formed on nail identify the solution and write the chemical equation
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When a iron rod is kept dipped in copper sulphate solution a brown coating
of copper is formed on the surface of iron.
The colour of the solution changes from blue to light green. It shows that
iron is more reactive than copper it replaces copper from CuSO4. CuSO4 is blue
in colour and FeSO4 is light green in colour.
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