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    What is observed?an electrolyte, NaCl is added to hydrated ferric oxide sol?

    Asked By Kanika Dhawan


    • When an electrolyte, NaCI is added to hydrated ferric oxide sol,charge on ferric hydroxide particles (+ve) is neutralised by -ve charge of Cl ions. Thus, coagulation takes place.

    • Ferric hydroxide is a +ve charged sol and Cl has -ve charge.Thus coagulation takes place and a precipitate forms.

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