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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)]`

Text Solution

Verified by Experts

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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