The Chemical Reaction
This reaction is a classic example of a single displacement reaction. Copper (Cu) is more reactive than silver (Ag), so it displaces silver from the silver nitrate solution. The reaction looks like this:
Cu(s) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)
Explanation
* Copper (Cu): The copper turnings act as the reactant, providing the copper atoms that will be involved in the reaction.
* Silver Nitrate (AgNO₃): This is the dissolved salt in solution, providing the silver ions (Ag⁺) needed for the reaction.
* Copper(II) Nitrate (Cu(NO₃)₂): As the copper reacts with silver nitrate, it forms copper(II) nitrate, which dissolves in the solution and is responsible for the blue color.
* Silver (Ag): Silver ions from the solution are reduced to solid silver metal, which forms a grayish-white precipitate at the bottom of the container.
The Blue Color
The blue color comes from the formation of copper(II) ions (Cu²⁺) in solution. Copper(II) ions have a characteristic blue color when dissolved in water.
In Summary
1. The copper turnings react with the silver nitrate solution.
2. Copper displaces silver from the solution, forming copper(II) nitrate.
3. Copper(II) nitrate dissolves in water and produces copper(II) ions, which are blue.
4. The blue color of the copper(II) ions makes the solution appear blue.
