Mixing potassium chloride (KCl) and sodium chloride (NaCl) does not result in a chemical reaction between them. Both KCl and NaCl are stable ionic compounds formed by the electrostatic attraction between potassium/sodium cations and chloride anions.

When these two compounds are mixed, they form a physical mixture. The solid particles of KCl and NaCl simply get intermingled without any chemical interaction. The individual chemical properties and compositions of KCl and NaCl remain unchanged within the mixture.