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Explain what is observed (a) When an e...

Explain what is observed
(a) When an electrolyte NaCl is added to ferric hydroxide sol.
(b) When an emulsion is subjected to centrifugation.
(c) When direct currect is passed through a colloidal sol.
(d) When a beam of light is passes through a colloidal solution.

Text Solution

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The positively charged colloidal sol of FeCS get coagulated by the oppositely charged `Cl^(-)` ions provided by NaCl.
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