When copper chloride (CuCl₂) and sodium carbonate (Na₂CO₃) are mixed in an aqueous solution, they react to form a bright blue precipitate of copper carbonate (CuCO₃), along with sodium chloride (NaCl) which remains dissolved in the solution.

Here's the balanced chemical equation for the reaction:

CuCl₂(aq) + Na₂CO₃(aq) → CuCO₃(s) + 2NaCl(aq)

Explanation:

* Copper chloride (CuCl₂) is a blue-green solid that dissolves in water.

* Sodium carbonate (Na₂CO₃) is a white solid that also dissolves in water.

* When these two solutions are mixed, the copper ions (Cu²⁺) from the copper chloride react with the carbonate ions (CO₃²⁻) from the sodium carbonate.

* This reaction forms copper carbonate (CuCO₃), which is insoluble in water and precipitates out of the solution as a bright blue solid.

* The remaining ions, sodium (Na⁺) and chloride (Cl⁻), remain dissolved in the solution as sodium chloride (NaCl).

Observations:

* You will observe a bright blue solid forming at the bottom of the beaker.

* The solution may also change color slightly, depending on the concentration of the reactants.

Note: This reaction is a classic example of a precipitation reaction, where two soluble reactants combine to form an insoluble product.