List two observations when iron nails are immersed in copper sulphate solution for about
20 minutes.
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When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green....
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Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. ... Thus iron is more reactive than copper. In this reaction, metalliciron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper.
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