Question:
Which of the following electrolyte will have maximum flocculation value for \( \mathrm{Fe(OH)}_{3} \) sol?
Which of the following electrolyte will have maximum flocculation value for \( \mathrm{Fe(OH)}_{3} \) sol?
Show Hint
Low valency of coagulating ion = High flocculation value.
Updated On: Apr 8, 2026
- $NaCl$
- $Na_{2}S$
- $(NH_{4})_{3}PO_{4}$
- $K_{2}SO_{4}$
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Flocculation value is inversely proportional to coagulating power.
Step 2: Analysis
$Fe(OH)_{3}$ is a positively charged sol. According to Hardy-Schulze rule, the ion with the lowest negative charge ($Cl^{-}$ in $NaCl$) has the lowest coagulating power.
Step 3: Conclusion
Lower coagulating power results in the maximum flocculation value.
Final Answer: (A)
Flocculation value is inversely proportional to coagulating power.
Step 2: Analysis
$Fe(OH)_{3}$ is a positively charged sol. According to Hardy-Schulze rule, the ion with the lowest negative charge ($Cl^{-}$ in $NaCl$) has the lowest coagulating power.
Step 3: Conclusion
Lower coagulating power results in the maximum flocculation value.
Final Answer: (A)
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