Question

Iron is more reactive than copper. Write an activity to show this.

Answer 1

To prove that iron is more reactive than copper:​

Steps:​

• Take a solution of copper sulphate (blue)

• Add some iron nails to it

• Leave it for about an hour

Observations:​

• A brown coating is formed on the surface of iron .

• The color of copper sulphate solution has turned from blue to light green.​

Conclusion:​

• Due to high reactivity of iron, it displaces copper and forms iron sulfate solution (light green).
  $\text{Fe}+{\text{CuSO}}_4$ $\to {\text{FeSO}}_4+\text{Cu}$