Answer:
Precipitation reactions can also be used for qualitative analysis, which is a technique used to identify the presence of specific ions in a solution. By introducing a specific reagent, known as a precipitating agent, to a solution containing ions, a reaction can occur that results in the formation of a solid precipitate. The formation or absence of a precipitate can help determine the presence or absence of certain ions in the solution. This is a useful technique in chemistry for identifying and characterizing different substances.