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Question
why does the colour of copper sulphate solution change when an iron nail is dipped in it ?
why does the colour of copper sulphate solution change when an iron nail is dipped in it ?
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Solution
When iron nails are dipped in copper sulphate solution, the blue colour of the solution fades away. This is because iron is more reactive than copper. Hence, it will displace copper from copper sulphate forming ferrous sulphate and copper. The chemical equation for the reaction is shown as follows :
CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
When iron nails are dipped in copper sulphate solution, the blue colour of the solution fades away. This is because iron is more reactive than copper. Hence, it will displace copper from copper sulphate forming ferrous sulphate and copper. The chemical equation for the reaction is shown as follows :
CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
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