Hardy-Schulze law states that: (a) solution must have higher...

Hardy-Schulze law states that:
(a) solution must have higher gold number
(b) disperse phase and dispersion medium must be of the same sign
(c) micelles coagúlate in presence of surfactants
(d) the ions carrying more opposite charge to that of sol particle are effective in coagulation

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Colloidal Stability

The stability of a colloidal system is maintained by the balance between repulsive forces, such as those arising from like-charge interactions, and attractive forces, often van der Waals in nature. Disturbing this balance by adding ions with sufficient charge can lead to coagulation or flocculation, which is central to the Hardy-Schulze law.

Hardy-Schulze Law

This law pertains to the coagulation of colloidal particles and states that ions with higher valency and opposite charge to that of the colloidal particle are more effective at neutralizing the particle charge, leading to coagulation of the colloid. It emphasizes the qualitative effect of ion charge in destabilizing colloidal suspensions.

Electrolyte Influence in Colloids

Electrolytes, when added to a colloidal system, introduce ions that interact with the electric double layer surrounding the particles. Counter ions—those with opposite charge—compress this layer or neutralize surface charges, thereby reducing electrostatic repulsion and promoting the aggregation of particles.

Please give Ace some feedback