Question

In an experiment an iron nail is dipped in copper sulphate solution wht will be the final colour

Answer 1

if iron nail is dipped in copper sulphate the blue colour changes into green colour
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Answer 2

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed in the surface of iron and the colour of copper sulphate solution changes from blue to pale green. The reaction shows that iron is more reactive than copper because it displaces copper from the copper sulphate solution.