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InterviewSolution
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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. `KCl`B. `MgCl_(2)`C. `Al_(2)(SO_(4))_(3)`D. `Na_(3)PO_(4)` |
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Answer» Correct Answer - C `As_(2)S_(3)` sol is a negatively charged colloid. `Al^(3+)` has greater charge, therefore, `Al_(2)(SO)_(4)` is most effective in the coagulation of `As_(2)S_(3)` sol. |
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