3CuCl₂ (aq) + 2Al (s) → 2AlCl₃ (aq) + 3Cu (s)
Explanation:
* Reactants:
* CuCl₂ (copper(II) chloride) is an aqueous solution, meaning it's dissolved in water.
* Al (aluminum) is a solid metal.
* Products:
* AlCl₃ (aluminum chloride) is an aqueous solution.
* Cu (copper) is a solid metal.
What happens:
* Aluminum is more reactive than copper. This means it has a stronger tendency to lose electrons and form positive ions.
* When aluminum comes into contact with copper(II) chloride, the aluminum atoms displace the copper ions from the solution.
* Aluminum forms aluminum chloride (AlCl₃), which dissolves in water.
* Copper metal (Cu) is deposited as a solid.
Observations:
* You'll see a reddish-brown solid (copper) forming on the surface of the aluminum.
* The solution will change color as the copper(II) chloride is consumed.
Important Notes:
* This reaction is exothermic, meaning it releases heat.
* The reaction can be quite vigorous, especially if the aluminum is in powdered form.
* This reaction is used in some applications to purify copper.
Let me know if you'd like to explore more about any of these points!
