Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
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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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Answer:
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Explanation:
When iron nail is immersed in the solution of copper sulphate than iron displace copper from the solution of copper sulphate because iron is more reactive than copper. There fore copper sulphate colour changes from blue to pale green.