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Which of the following is the most effec...

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

A

KCl

B

`KNO_3`

C

`K_2SO_4`

D

`K_3[Fe(CN)_6]`

Text Solution

Verified by Experts

The correct Answer is:
d
Coagulation is carried out by mixing two opposite charged sols.
Coagulation poer of given compound is
`K_3[Fe(CN)_6]gtK_2SO_4gtKNO_3gtKCl`
`therefore` Ferric hydroxide sol is coagulated effectively by `K_3[Fe(CN)_6]`
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