Here's what happens:
* Reaction Equation:
(NH₄)₂CO₃(aq) + CaCl₂(aq) → CaCO₃(s) + 2NH₄Cl(aq)
* Explanation:
* Ammonium carbonate and calcium chloride are both soluble in water, forming aqueous solutions.
* When mixed, the ammonium ions (NH₄⁺) and chloride ions (Cl⁻) from the reactants switch partners.
* This results in the formation of calcium carbonate (CaCO₃), which is insoluble in water and precipitates out as a white solid.
* The other product is ammonium chloride (NH₄Cl), which remains dissolved in the solution.
Key Observations:
* Formation of a white precipitate: The most noticeable sign of the reaction is the formation of a white solid (calcium carbonate) that settles at the bottom of the container.
* Evolution of ammonia gas: Depending on the reaction conditions, some ammonia gas (NH₃) might be released due to the decomposition of ammonium carbonate.
Note: This reaction is often used in chemistry demonstrations to illustrate double displacement reactions and the formation of precipitates.
