JEE Advanced · Chemistry · 19. Surface Chemistry
Choose the correct reason(s) for the stability of the lyophobic colloidal particles.
- A Preferential adsorption of ions on their surface from the solution.
- B Preferential adsorption of solvent on their surface from the solution.
- C Attraction between different particles having opposite charges on their surface.
- D Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.
Answer & Solution
Correct Answer
(D) Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.
Step-by-step Solution
Detailed explanation
(a) When two or more ions are present in the dispersion medium, preferential adsorption of the ion common to the colloidal particle takes place.
(d) This is called zeta potential which helps in increasing the stability of the lyophobic sol.
(d) This is called zeta potential which helps in increasing the stability of the lyophobic sol.
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