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What changes do you observe in the iron ...

What changes do you observe in the iron nails and colour of copper sulphate solution if the nails are dipped in `CuSO_(4)` solution for 15 minutes ?

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Iron nails turn to brown and the solution becomes light green because of the displacement reaction taking place in solution
`Re(s) + CuSO_(4)(aq) rarr underset(("Light green"))(FeSO_(4)(aq))+ underset(("Brown"))(Cu(s))`
A brown coating gets deposited on the surface of the nails.
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