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Which of the following will be the most effective in the coagulation of `Fe(OH)_(3)` sol ?A. `Mg(PO_(4))_(2)`B. `BeCl_(2)`C. `NaCl`D. `KCN` |
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Answer» Correct Answer - A Accrding to Hardy Schulze rule, coagulation power of lons is directiy proportional to charge on ion. `:.Fe(OH)_(3)` is positively charged colloid. `:.` It will be coagulated anion. (a) `Mg_(3)(PO_(4))_(2)hArr 3Mg^(2+) + 2PO_(4)^(3-)` (b) `BaCl_(2)hArrBa^(2+) + 2Cl^(-)` (c ) `NaClhArr Na^(+) + Cl^(-)` (d)`KCN hArrK^(+) + CN^(-)` |
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