InterviewSolution
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InterviewSolution
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A reddish brown positively charged sol is obtained by adding small quantity of `FeCl_(3)` solution to freshly prepared and well washed `Fe(OH)_(3)` precipitate. How does it take place ? |
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Answer» It is due to adsorptions of `Fe^(3+)` ions on the surface of `Fe(OH)_(3)` which gives colloidal sol. `Fe(OH)_(3) (ppt.) + Fe^(3+)` (ions adsorbed) `to [Fe(OH)_(3)]Fe^(3+)` (colloidal sol). |
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