Word Equation:

Lead(II) nitrate + sodium iodide → lead(II) iodide + sodium nitrate

Balanced Chemical Equation:

Pb(NO₃)₂ (aq) + 2NaI (aq) → PbI₂ (s) + 2NaNO₃ (aq)

Explanation:

* Lead(II) nitrate (Pb(NO₃)₂) is an aqueous solution (aq).

* Sodium iodide (NaI) is also an aqueous solution (aq).

* Lead(II) iodide (PbI₂) is a yellow precipitate that forms as a solid (s).

* Sodium nitrate (NaNO₃) remains in solution as an aqueous solution (aq).

Balancing:

* The equation is balanced by ensuring that the number of atoms of each element is equal on both sides.

* There are 2 nitrates (NO₃) on the left side and 2 on the right side.

* There are 2 sodiums (Na) on the left and 2 on the right.

* There is 1 lead (Pb) on each side.

* There are 2 iodines (I) on each side.

Therefore, the equation is balanced.