The Gravimetric analysis is based on which type of reaction?

Gravimetric analysis primarily relies on precipitation reactions, making it essential for accurately determining the concentration of a particular analyte in a sample. In this analytical technique, a substance is converted into an insoluble compound, typically by adding a reagent that reacts specifically with the target ion to form a solid precipitate.

The precipitate is then filtered, dried, and weighed. This weight is used to calculate the amount of the analyte based on stoichiometric relationships. The success of gravimetric analysis hinges on the formation of pure, stable, and completely precipitated compounds, which is characteristic of precipitation reactions. These reactions not only provide a means of isolating the analyte but also inherently produce a measurable change in mass, making gravimetric methods particularly useful in quantitative analysis.

Therefore, the focus on precipitation as the basis for gravimetric analysis sets it apart from other types of reactions like neutralization, decomposition, or redox reactions, which do not typically lend themselves to this form of mass-based quantitative determination.