Why does the colour of copper sulphate solution change when an iron nail is dipped in it.
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Explanation:
Because when iron nail is dipped in copper sulphate the iron reacts with copper sulphate resulting in colour change
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Answer:
when an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper . Therefore copper sulphate colour changes from blue to pale green
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