Incorporation or removal of an otherwise soluble component during precipitation of another material. Surface adsorption, occlusion of solution and incorporation in the growing solid can make precipitation less selective than a solubility-product calculation alone suggests.
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Coprecipitation is a chemical process in which two or more substances precipitate together from a solution, resulting in the simultaneous formation of a solid phase that contains all of the dissolved components. This process is often employed in various fields, including chemistry, materials science, and biochemistry, for the purpose of isolating specific compounds or for creating composite materials.