MHT CET 2023 Chemistry question

Not in JEE Main or NEET syllabus

Which of the following is character of lyophilic colloid?

(A)Particles of dispersed phase have no affinity for dispersion medium
(B)Particles easily detected under ultramicroscope
(C)Addition of large amount of electrolyte causes precipitationCorrect
(D)These are irreversible colloids.

Answer: (C)

Solution

Lyophilic (solvent-loving) colloids have a strong affinity between the dispersed phase and the dispersion medium; the particles are heavily solvated, so they are very stable and are precipitated (coagulated) only by addition of a large amount of electrolyte, which removes the solvation layer.

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Question ID VK-095349