The reaction between sodium iodide (NaI) and copper nitrate (Cu(NO₃)₂) is a double displacement reaction that produces copper iodide (CuI) and sodium nitrate (NaNO₃).

Here's the balanced chemical equation:

2 NaI (aq) + Cu(NO₃)₂ (aq) → 2 NaNO₃ (aq) + CuI (s)

Explanation:

* (aq) indicates that the substance is dissolved in water (aqueous solution).

* (s) indicates that the substance is a solid precipitate.

Key Observations:

* Copper iodide (CuI) is a white solid that precipitates out of the solution, making the reaction visually apparent.

* Sodium nitrate (NaNO₃) remains dissolved in the solution.

Note: This reaction is also a type of metathesis reaction, where the cations and anions of two reactants exchange partners.