Question

The potential difference between fixed charged layer and the diffused layer having opposite charge is called:

• A. zeta potential
• B. colloidal potential
• C. dorn potential
• D. streaming potential

Answer 1

The correct option is A zeta potential

The surface of a colloidal particle acquires a positive or a negative charge by selective adsorption of ions carrying +ve or – ve charges respectively. Thus, an electrical double layer is formed on the surface of the particles i.e., one due to adsorbed ions and the other due to oppositely charged ions forming a diffused layer. This potential difference between the fixed charge layer and diffused layer of opposite charge is called electrokinetic potential or zeta potential