The process of seeding during the extraction of aluminium involves the addition of pure AI(OH)3 crystals in order to
Answer Details
The addition of pure AI(OH)3 crystals during the extraction of aluminium is called seeding. The purpose of seeding is to facilitate the precipitation of solid Al(OH)3. When the pure AI(OH)3 crystals are added, they act as nucleation sites where additional Al(OH)3 molecules can deposit and grow. This results in the formation of larger and more uniform particles of Al(OH)3, which can be easily separated from the solution. Therefore, the correct option is "facilitate the precipitation of solid."