During an experiment, Amit observed that blue colour of aqueous copper sulphate solution changed to pale green by immersing a metallic rod for some time.
i. Which metallic rod Amit might have immersed in the solution and What colour would be observed on the rod?
ii. mention the type of reaction in this case.
i. This is an example of a displacement reaction. A container containing blue copper sulphate solution is taken. Amit immersed an iron rod in the copper sulphate
The iron nail becomes brownish in colour after some time.
(ii) Displacement reaction
This is an example of a displacement reaction.
Fe + CuSO4
FeSO4 + Cu
The Fe displaces Cu from CuSO4 and the solution becomes CuSO4 and is thus in green colour. The copper metal formed is deposited on the iron nail and gives a brownish colour.