Which from following anions has maximum coagulating power for precipitation of positive sol?

Which from following anions has maximum coagulating power for precipitation of positive sol?
  1. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$
  2. $\mathrm{Cl}^{-}$
  3. $\quad \mathrm{SO}_4^{-}$
  4. $\mathrm{PO}_4^{--}$

Solution

In the coagulation of positive sol, greater the negative charge of the flocculating ion added, greater is its power to cause precipitation.

Asked in: MHT CET 2024 (09 May Shift 2)

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