The Reaction:
* Aluminum (Al) is more reactive than copper (Cu). This means aluminum can displace copper from its compound.
* CuCl₂·H₂O dissolves in water to form copper(II) ions (Cu²⁺) and chloride ions (Cl⁻).
* The aluminum reacts with the copper(II) ions, forming aluminum chloride (AlCl₃) and copper metal (Cu).
Chemical Equation:
3 CuCl₂·H₂O + 2 Al → 2 AlCl₃ + 3 Cu + 6 H₂O
Observations:
* You will observe the formation of a reddish-brown precipitate, which is copper metal.
* The solution will turn colorless as the copper(II) ions are consumed.
* Bubbles of hydrogen gas might be seen as a byproduct of the reaction.
Important Note:
* This reaction is exothermic, meaning it releases heat.
* The reaction is usually carried out in an acidic solution to speed up the process.
In summary, the addition of CuCl₂·H₂O and Al to water results in a single displacement reaction where aluminum displaces copper from its compound, forming copper metal and aluminum chloride.
