Question

What happens when we add iron nails in a Cooper sulphate solution. Explain with chemical equation.
explain with chemical equation for class 7.​

Answer 1

Answer:

When we add iron nails to a copper sulphate solution, the iron displaces copper in its solution to form an aqueous solution of iron sulphate. The colour of the solution changes from blue to light green and the nail gets covered by a reddish brown layer which is the displaced copper.

CuSO4 + Fe = FeSO4 + Cu