1.

Which of the following electrolyte will have maximum flocculation value for Fe(OH)_(3) sol ?

Answer»

NaCl
`Na_(2)S`
`(NH_(4))_(3)PO_(4)`
`K_(2)SO_(4)`

Solution :`Fe(OH)_(3)` is positively charged. Hence `Cl^(-)` ions with minimum opposite charge will have MAXIMUM flocculation VALUE (minimum cagulating power).


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