Hardy – schulze’s rule: The Hardy schulze rule indicates that the higher the valency of the electrolyte being supplied, the faster the coagulation. The attraction is based on electrostatic forces. The coagulation power increases with the valency of the flocculation ion.
Final Answer: Hardy Schulze’s rule states that faster coagulation occurs with more oppositely charged ions in the electrolyte. It is based on the law of electrostatic attraction. Coagulation power increases as flocculation ion valency increases.