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Which of the following is most effective...

Which of the following is most effective in causing the coagulation of ferric hydroxide sol :-

A

KCI

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 having highest magnitude of -ve charge among given options
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