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Which one of the following id most effec...

Which one of the following id most effective in causing the coaglation of an `As_2S_3sol`?

A

KCl

B

`AlCl_3`

C

`MgSO_4`

D

`K_3[Fe(CN)_6]`

Text Solution

Verified by Experts

The correct Answer is:
b
According to Schulze rule,valency of the coagulating ion is directly proportional to the coagulating power. `As_2S_3` is a negative solution and its cations are effective in coagulating negative solutions. Hence` AlCl_3` is most effective in causing coagulation of `As_2S_3` solution.
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