Silver nitrate solution turns blue when a piece of copper is added to it. This is because of

Explanation

When copper wire is placed in silver nitrate solution then the solution becomes blue colored. We will use electrochemical series to solve the question. Copper is more reactive than silver. Hence when the copper wire is dipped in silver nitrate solution it displaces silver from silver nitrate (AgNO3) solution forming copper nitrate which is bluish-green.This is a displacement reaction. A shining gray-white deposit of silver is formed on the copper strip and therefore the solution becomes bluish-green because of the formation of copper nitrate. We observe that the solution becomes blue