Here's the breakdown of the full ionic equation for the reaction between calcium chloride (CaCl₂) and silver nitrate (AgNO₃):

1. Balanced Chemical Equation:

CaCl₂(aq) + 2AgNO₃(aq) → Ca(NO₃)₂(aq) + 2AgCl(s)

2. Identifying the Ions in Solution:

* CaCl₂(aq): Ca²⁺(aq) + 2Cl⁻(aq)

* AgNO₃(aq): Ag⁺(aq) + NO₃⁻(aq)

* Ca(NO₃)₂(aq): Ca²⁺(aq) + 2NO₃⁻(aq)

* AgCl(s): This is a solid precipitate and does not dissociate into ions.

3. Full Ionic Equation:

Ca²⁺(aq) + 2Cl⁻(aq) + 2Ag⁺(aq) + 2NO₃⁻(aq) → Ca²⁺(aq) + 2NO₃⁻(aq) + 2AgCl(s)

Key Points:

* Spectator Ions: Notice that Ca²⁺ and NO₃⁻ ions appear on both sides of the equation. These are called spectator ions because they don't directly participate in the reaction.

* Net Ionic Equation: To focus on the essential reaction, we can eliminate the spectator ions to get the net ionic equation:

2Ag⁺(aq) + 2Cl⁻(aq) → 2AgCl(s)

This equation represents the formation of the silver chloride precipitate.