Question

When an iron nail is dipped in blue copper sulphate solution becomes browinsh in colour and blue colour of copper sulphate turns to light green

Answer 1

Iron being more reactive than copper displaces copper from copper sulphate solution.

Answer 2

Hey friend

This happens because Fe is more reactive than Cu

A single displacement reaction takes place in this case.

When Fe is dipped in CuSO4 Fe displaces Cu and forms green coloured FeSO4 solution whereas Cu is deposited on the iron nail

In simple words iron takes place of copper and copper takes place of iron.

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