A freshly prepared Fe(OH)3 precipitate is peptised by adding FeCl3 solution. The charge on the colloidal particles is due to the preferential adsorption of:
Correct answer: B. Fe3+ ions
- A. Cl− ions
- B. Fe3+ ions
- C. OH− ions
- D. Fe+2 ions
Explanation
Fe(OH)3 is a positive sol. The positive charge is due to the preferential adsorption of Fe3+ ions.
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