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A sol has positively charged colloidal p...

A sol has positively charged colloidal particles. Which of the following solution is required in lowest concentration for coagulation?

A

NaCl

B

`K_(4)[Fe(CN)_(6)]`

C

`ZnCl_(2)`

D

`Na_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
According to Hardy Schulze rule, the ion having opposite charge to sol particles cause coagulation and greater the valency of the oppositely charged ion more is the coagulationg power.
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