When you mix sodium chloride (NaCl) and silver nitrate (AgNO₃), a precipitation reaction occurs. This means that a solid, called a precipitate, forms from the solution. Here's what happens:

1. The reactants: Sodium chloride (NaCl) is a soluble salt, meaning it dissolves in water to form sodium ions (Na⁺) and chloride ions (Cl⁻). Silver nitrate (AgNO₃) is also a soluble salt, forming silver ions (Ag⁺) and nitrate ions (NO₃⁻) in solution.

2. The reaction: When these two solutions are mixed, the silver ions (Ag⁺) from the silver nitrate react with the chloride ions (Cl⁻) from the sodium chloride. This forms an insoluble compound called silver chloride (AgCl).

3. The precipitate: Silver chloride (AgCl) is a white, solid precipitate that forms in the solution. This is the visible result of the reaction.

4. The remaining ions: The remaining ions in solution are sodium ions (Na⁺) and nitrate ions (NO₃⁻), which remain dissolved.

The chemical equation for this reaction is:

NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)

Key takeaways:

* The reaction forms a precipitate (AgCl).

* This type of reaction is called a double displacement reaction.

* It's an example of how solubility rules help predict chemical reactions.