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Explain what is observed An electrolyt...

Explain what is observed
An electrolyte, NaCl is added to ferric hydroxide sol (or hydrated ferric oxide sol in water)

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The correct Answer is:
(a) Positively charged colloidal particles of `Fe(OH)_(3)` get coagulated by the oppositely charged `Cl^(-)` ions provided by NaCl.
(b) Constituent liquids of the emulsion separate out i.e., demulsification occurs.
(c) Colloidal particles move towards the oppositely charged electrodes, where they lose their charge and get coagulated.
(d)Scattering of light by the colloidal particles takes place and the path and the path of light becomes visible (Tyndall effect).
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