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Which one of the following acts as the b...

Which one of the following acts as the best coagulating agent for ferric hydroxide sol?

A

Potassium ferrocyanide

B

Potassium chloride

C

Potassium oxalate

D

Aluminium chloride

Text Solution

Verified by Experts

The correct Answer is:
A
The efficiency of coagulation of an electrolyte depends upon its valency. Thus `[Fe(CN)_(6)]^(4-)` is the best coagulating agent for `Fe(OH)_(4-)` is the best coagulating agent for `Fe(OH)_(3)` sol.
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