Answer:
When mixed with a solution of aqueous sodium carbonate, a solution containing copper (II) ions will form a precipitate.
Step-by-step explanation:
A precipitation reaction is a reaction in which one of the products is insoluble in the solvent of the reaction (this is usually water).
These reactions are one of the types of double-displacement reactions in which the cations and anions of the reactants are inter-changed.
When mixed with a solution of aqueous sodium carbonate, a solution containing copper (II) ions will form a precipitate which is insoluble in water.
The copper (II) ions will form together with the carbonate, a precipitate. Which will be insoluble. An example is CuSO4.
Na2CO3 + CuSO4 → 2Na+ + CO32- + Cu+ + SO42- →2Na+ + SO42- + CUCO3