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  • Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Q 1.     Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

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The colour of copper sulphate solution change when an iron nail is dipped in it because iron  displaces copper from copper sulphate forming iron sulphate,which is green.

CuSO_4(aq)+Fe(s)\rightarrow FeSO_4(aq)+Cu(s)

The colour change from blue to green.

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seema garhwal

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