Question

Blue solution of copper sulphate changes to green when a piece of iron is added to this solution.​

Answer 1

Answer:

Hope it helps you!....

Explanation:

So, when an iron nail is dipped in a copper sulphate solution, iron displaces copper from its solution to form iron sulphate, which is green in color. Hence, the blue color of copper sulphate solution changes into green color because of this displacement reaction.

Answer 2

Answer:

first i wanna appreciate you for asking this excellent question,v.Good question

Explanation:

now I explain you

it is an oxidation ,reduction process ,

real life example

it also happens in "the statue of liberty"

the color of the statue was chang ed into bluish -green due to this process.

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