Question

what does the colour of copper sulphate solution change when an iron nail is dipped in it​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

when iron nail is dipped in copper sulphate solution double displacement reaction takes place and iron ions displaces copper ions and copper ions get deposited on iron nail making the solution green in colour ..