When you combine aqueous solutions of sodium carbonate (Na₂CO₃) and zinc chloride (ZnCl₂), you get a precipitate of zinc carbonate (ZnCO₃) and a solution of sodium chloride (NaCl).

Here's the balanced chemical equation for the reaction:

Na₂CO₃(aq) + ZnCl₂(aq) → ZnCO₃(s) + 2NaCl(aq)

Explanation:

* Precipitation: Zinc carbonate (ZnCO₃) is insoluble in water, so it forms a solid precipitate that falls out of the solution.

* Double Displacement: This is a double displacement reaction, where the positive and negative ions of the reactants switch partners.

* Aqueous Solutions: The reactants and products that are (aq) are dissolved in water.

Observations:

* You would see a white cloudy precipitate forming in the solution.

* The reaction releases heat, indicating it's an exothermic reaction.

Let me know if you'd like more details about any aspect of this reaction!