Here's the balanced chemical equation for the reaction:
ZnCl₂(aq) + Na₂CO₃(aq) → ZnCO₃(s) + 2NaCl(aq)
Explanation:
* Zinc chloride and sodium carbonate are both soluble in water, so they exist as ions in solution.
* The zinc ions (Zn²⁺) from zinc chloride will react with the carbonate ions (CO₃²⁻) from sodium carbonate.
* Zinc carbonate is insoluble in water, so it precipitates out of solution as a white solid.
* The remaining sodium ions (Na⁺) and chloride ions (Cl⁻) remain dissolved in solution as sodium chloride.
Observations:
* The reaction will result in the formation of a white precipitate (zinc carbonate).
* The solution will become cloudy due to the formation of the precipitate.
* If you continue to add sodium carbonate, the precipitate will continue to form until all the zinc chloride has reacted.
This reaction is a common example of a precipitation reaction, where an insoluble compound is formed from the reaction of two soluble compounds.