Why does the colour of copper sulphate solution change when an iron na

1.	Why does the colour of copper sulphate solution change when an iron nail is dipped in it..!?
Answer» IRON replaces COPPER from its salt solution and forms iron SULPHATE thus resulting in the change of color from BLUE to brownish

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

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