WBJEE · Chemistry · Surface Chemistry
Among the following, the ion which will be more effective for flocculation of \(\mathrm{Fe}(\mathrm{OH})_{3}\) sol. is
- A \(\mathrm{PO}_{4}^{3-}\)
- B \(\mathrm{SO}_{4}^{2-}\)
- C \(\mathrm{SO}_{3}^{2-}\)
- D \(\mathrm{NO}_{3}^{-}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{PO}_{4}^{3-}\)
Step-by-step Solution
Detailed explanation
Hint: \(\mathrm{Fe}(\mathrm{OH})_{3}\) is a positive sol. \(\mathrm{PO}_{4}^{3-}\) carrying the highest -ve charge amongst the given ions is most effective
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