Q.

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

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a

Attraction between different particles having opposite charges on their surface

b

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

c

Preferential adsorption of solvent on their surface from the solution

d

Preferential adsorption of ions of their surface from the solution

answer is A, D.

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Detailed Solution

(a) Due to preferential adsorption of common ions

(b) Incorrect

(c) Incorrect (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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