Explain what is observed (iii) electric current is passed through a colloidal sol?
Explanation The colloidal particles either carry a positive or negative charge. The system is made neutral when the dispersion medium carries an equal and opposite charge. The colloidal particles move towards the oppositely charged electrode when they are under the influence of an electric current. They coagulate when they come in contact with the electrode and lose their charge. Final Answer The colloidal particles move towards the oppositely charged electrode when it is under the influence of electricity. The particles come into contact and hence coagulate.
