Which of the following electrolytes is the mo | vedclass

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(A) Ferric hydroxide sol is a positively charged sol. According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valen

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$Na_3PO_4$

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(A) Ferric hydroxide sol is a positively charged sol. According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency of the oppositely charged ion (anion in this case). Greater the valency of the flocculating ion,the greater is its coagulating power. The anions present in the given electrolytes are: $A) PO_4^{3-}$,$B) NO_3^-$,$C) Cl^-$,$D) SO_4^{2-}$. Since the phosphate ion $(PO_4^{3-})$ has the highest valency $(-3)$,it is the most effective in coagulating the positively charged ferric hydroxide sol.

Which of the following electrolytes is the most effective for the coagulation of ferric hydroxide sol?

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