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InterviewSolution
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For coagulating `As_(2)S_(3)` colloidal sol, which of the following will have the lowest coagulation valueA. NaCl solutionB. KClC. `BaCl_(2)`D. `AlCl_(3)` |
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Answer» Correct Answer - D The amount of electrolyte required to coagulated a fixed amount of a solution depends upon the valency of the flocculation ion. The flocculating power of the various ions follows the following order, larger the valency lesser will be coagulating value. `Al^(3+) gt Mg^(2+) gt Na^(+)`, hence lowest coagulation value is of `AlCl_(3)`. |
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