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Which of the following is required in lo...

Which of the following is required in lowest concentration to coagulate a positively charged `Fe(OH)_3` sol ?

A

`Na_2S_2 O_3`

B

`K_3[Fe(CN)_6]`

C

`[K_4[Fe(CN)_6]`

D

`Al_2[SO_4]_3`.

Text Solution

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The correct Answer is:
C
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