COAGULATIONS

Coagulation or precipitation / coagulation caused by the force of gravity will occurif the system is in a state of charged colloids. There are several things that cancause the colloid to be neutral, namely:

Using the principle of electrophoresis. The process of electrophoresis is the movement of colloidal particles are charged to the electrode of opposite charge.When these particles reach the electrode, then the colloidal system will lose its cargo and neutral.

1. The addition of other colloids of opposite charge. When mixed with positively charged colloidal colloidal negatively charged, then charge it will eliminate each other and are neutral.
2. The addition of other colloids of opposite charge. When mixed with positively charged colloidal colloidal negatively charged, then charge it will eliminate each other and are neutral.
3. The addition of electrolytes. If an electrolyte is added to the colloidal system, thenegatively charged colloidal particles will adsorb colloids with a positive charge(cations) from the electrolyte. Vice versa, the positive particles will adsorbnegative particles (anions) from the electrolyte. Of adsorption above, thecoagulation occurs.
4. Boiling. The temperature rise causes collisions between the system of colloidalparticles of the sol with water molecules increase. This releases the electrolyteare adsorbed on the surface of the colloid. Consequently uncharged particles.