Arsenic sulphide forms a sol with a nega...

Arsenic sulphide forms a sol with a negative charge.
Which of the following ionic substances should be most effective in coagulating the sol?

A

KCl

B

`MgCl_(2)`

C

`Al_(2)(SO_(4))_(3)`

D

`Na_(3)PO_(4)`

Verified by Experts

The correct Answer is:

C

More the charge on cation, more the effectiveness of the electrolyte.

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