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JEE CHEMISTRY MCQ: SURFACE CHEMISTRY

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On adding AgNO3AgN{O_3} solution to KIKI solution, a negatively charged colloidal solution will be formed in which of the following conditions?
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Correct option: D
100mlof0.1M   AgNO3+100mlof0.15M KI          100\mathrm{ }ml\mathrm{ of }0.1\mathrm{ }M\;\,AgN{O_3} + \mathrm{ 10}0\mathrm{ }ml\mathrm{ of }0.15\mathrm{ }M\,KI\;\;\;\;\;
Option D (100mlof0.1M   AgNO3+100mlof0.15M KI100\mathrm{ }ml\mathrm{ of }0.1\mathrm{ }M\;\,AgN{O_3} + \mathrm{ 10}0\mathrm{ }ml\mathrm{ of }0.15\mathrm{ }M\,KI) is correct because excess KI will adsorb I−I^- ions, forming a negatively charged colloidal solution.

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