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which of the following is most effective in coagulating ferric hydroxide sol? a. `KCl` b. `FeCl_(3)` c. `Na_(2)SO_(4)` d. `K_(3)[Fe(CN)_(6)]`

Answer» Since `Fe(OH)_(3)` sol is positively charged, the anion having highest charge will be the most effective, i.e., `[Fe(CN)_(6)]^(3-)` Since `Fe(OH)_(3)` sol is positively charged, the anion having highest charge will be the most effective, i.e., `[Fe(CN)_(6)]^(3-)`


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