Choose the correct reason(s) for the stability of the lyophobic colloidal particles.

[IIT-JEE-2012]

Preferential adsorption of ions on their surface from the solution.

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Preferential adsorption of solvent on their surface from the solution.

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Attraction between different particles having opposite charges on their surface.

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Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.

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Solution

The correct option is D
Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.

a) due to preferential adsorption of common ions

b) false

c) False (due to repulsion not due to attraction)

d) The layer of oppositely charged particles around any colloidal particles will decrease the potential energy of system as a whole.

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