Question

copper sulphate +iron​

Answer 1

Answer:

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.

Answer 2

Answer:

Displacement reaction

Explanation:

Iron being more reactive than copper will displace copper from its salt and form a subsequent salt of ferrous sulphate. During the reaction, the colour of copper sulphate [blue] will change to greenish-blue {ferrous sulphate}. This is an example of a Displacement reaction.

Fe(s)+CuSO4  (aq)⟶FeSO4 (aq)+Cu(s)

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