JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Surface Chemistry

The Zeta potential is related to which property of colloids?

(A)Colour
(B)Tyndall effect
(C)Charge on the surface of colloidal particles✓ Correct
(D)Brownian movement

Answer: (C)

Solution

Zeta potential (ζ-potential) is the electric potential difference between the fixed layer of charges adsorbed on the colloidal particle surface and the diffuse layer of counter-ions in the surrounding medium. It quantifies the charge on the surface of colloidal particles and is crucial for understanding colloidal stability. A high zeta potential (positive or negative) indicates strong electrostatic repulsion between particles, preventing coagulation.

JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Single correct option

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