1.

Arsenic (III) 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)`D. `Na_(3)PO_(4)`

Answer» Correct Answer - C
The more the charge on cation, the more the effectiveness of the electrolyte.


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