Supersaturation and precipitate formation

These results indicated that the particle size of a precipitate decreases with increasing concentration of the reactants. For the production of a crystalline 

Applications of the above conceptions are to be found in the following recognised procedures in gravimetric analysis. 

Precipitation is usually carried out in hot solutions, since the solubility generally increases with rise in temperature. 

Precipitation is effected in dilute solution and the reagent is added slowly and with thorough stirring. The slow addition results in the first particles precipitated acting as nuclei which grow as further material precipitates. 

A suitable reagent is often added to increase the solubility of the precipitate and thus lead to larger primary particles. 

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