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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. `KCI`B. `MgCI_(2)`C. `AI_(2)(SO_(4))_(3)`D. `NaPO_(4)` |
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Answer» Correct Answer - a `As_(2)S_(3)` sol is a negatively charged colload `AI^(3+)` has greater charge, threfore `AI_(2)(SO_(4))_(3)` is most effective in the congulation of `As_(2)S_(3)` sol |
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