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Which of the following ions is most effe...

Which of the following ions is most effective in the coagulation of ferric hydroxide solution?

A

Cryolite

B

`K_2Cr_2O_4`

C

`K_3[Fe(CN)_6 ]`

D

`K_4 [Fe(CN)_6] `

Text Solution

Verified by Experts

The coagulating power of an electrolyte is directly proportional to the fourth power of the valency of the effective ion. For positively charged sol, like `FeC_3` the order is
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