Iron is more reactive than copper. Can you write an activity to show this?

AcademicChemistryNCERTClass 8

Activity:
  • Take about 50 mL of water in a beaker and dissolve 5 g of copper sulphate in it to obtain copper sulphate solution (which is blue in colour).
  • Put a clean iron nail in this solution and keep the beaker undisturbed for some time.
Observation:
We will find that the blue colour of copper sulphate solution starts fading gradually and the iron nail gets covered with a red-brown layer of copper metal. 
It is the copper metal set free from its compound which forms a red-brown layer on the surface of iron nail. This shows that iron is more reactive than copper.

$Copper sulphate (blue solution) + Iron (Grey) \rightarrow Iron sulphate (Greenish solution) + Copper (red-brown) $
raja
Updated on 10-Oct-2022 13:24:25

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