This video explains the particle size of the precipitate and the factor affecting the particle size like

 temperature 

rate of mixing of reagents

 the concentration of the reagents 

solubility of the precipitate at the time of presentation 

and also the relative supersaturation with correlation the crystal size and the surface area and the condition required for precipitation that help in achieving the low relative supersaturation.

This video explains the theory of precipitation and purification of precipitation in terms of how to avoid contamination of precipitates.

In this video lecture, we discuss the simultaneous precipitation and the co-precipitation,  i.e. four types 

1. surface adsorption 

2. isomorphic inclusion 

3. non-isomorphic 

4. occlusion 

This video explains the process of digestion of precipitation and also the colloidal nature in the formation of precipitation with the term coagulation and peptization and the type of colloidal particle hydrophilic as well hydrophobic.

This video explains the common ion effect that is helping the suppression of the degree of dissociation of the weak electrolyte by adding the strong electrolyte having the common ion.