When sodium chloride (NaCl) and lead nitrate (Pb(NO₃)₂) react, they form a white precipitate of lead chloride (PbCl₂) .

Here's the balanced chemical equation for the reaction:

2 NaCl (aq) + Pb(NO₃)₂ (aq) → PbCl₂ (s) + 2 NaNO₃ (aq)

Explanation:

* The reaction is a double displacement reaction.

* The sodium ions (Na⁺) from NaCl and the nitrate ions (NO₃⁻) from Pb(NO₃)₂ remain in solution as soluble sodium nitrate (NaNO₃).

* Lead ions (Pb²⁺) from Pb(NO₃)₂ react with chloride ions (Cl⁻) from NaCl to form insoluble lead chloride (PbCl₂), which precipitates out of the solution as a white solid.