Question

define zeta potential in chemistry????

Answer 1

Solution -

The zeta potential (ζ-potential) is the potential difference across phase boundaries between solids and liquids. It's a measure of the electrical charge of particles are that are suspended in liquid. Since zeta potential is not equal to the electric surface potential in a double layer or to the Stern potential, it is often the only value that can be used to describe double-layer properties of a colloidal dispersion.

 Zeta potential, also known as electrokinetic potential, is measured in millivolts (mV).

In colloids, zeta potential is the electric potential difference across the ionic layer around a charged colloid ion. Put another way, it's the potential in the interface double layer at the slipping plane. Typically, the higher the zeta-potential, the more stable the colloid. Zeta potential that are less negative than -15 mV typically represents the beginnings of agglomeration of particles. When the zeta-potential equals zero, the colloid will precipitate into a solid.

Answer 2

the electrostatic potential developed is called zeta potential