JEE CHEMISTRY MCQ: SURFACE CHEMISTRY

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Which electrolyte is least effective in causing coagulation of +ve ferric hydroxide sol?

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Correct option: A

\mathrm{KBr}

Option A (

\mathrm{KBr}

) is correct because bromide ions have the lowest charge and thus are least effective in coagulating a positive sol, according to the Hardy-Schulze rule.

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