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Which of the following electrolyte will have maximum flocculation value for $Fe(OH)_3$ sol?

(a) $NaCl$

(b) $Na_2S$

(c) $(NH_4)_3PO_4$

(d) $K_2SO_4$

1 Answer

Toolbox:
  • Flocculation value = $\frac{\text{1}}{\text{Coagulating Power}}$
Answer: NaCl
 
$Fe(OH)_3$ is positively charged. Hence $Cl^-$ ions with minimum opposite charge will have maximum flocculation value (minimum coagulating power)

 

answered Dec 14, 2013 by mosymeow_1
 

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