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what is the correct sequence of the decreasing coagultion value of the following electrolyte for the coagultion of ferric hydroxide sol ?
`(I) Na_(3) PO_(4) (II)KCl (III) K_(2)SO_(4) (IV)K_(4)[Fe(CN)_(6)]`

A

KCl

B

`KNO_(3)`

C

`K_(2)SO_(4)`

D

`K_(3)[Fe(CN)_(6)]`

Text Solution

Verified by Experts

The correct Answer is:
D
`Fe(OH)_(3)` is positive sol. `K_(3) [Fe(CN)_(6)]` will provide `[Fe(CN)_(6)]^(3-)` for coagulation.
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