Question

why does the colour of copper sulphate solution change when an iron nail is depped in it?

Answer 1

as iron is more reactive than copper. it displaces copper from its solution and forms feso4 . so the color of cuso4 solution changes.

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Answer 2

Explanation:

• When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

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