Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
Among the electrolytes $\mathrm{Na}_2 \mathrm{SO}_4, \mathrm{CaCl}_2 \quad \mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$ and $\mathrm{NH}_4 \mathrm{Cl}$, the most effective coagulating agent for $\mathrm{Sb}_2 \mathrm{~S}_3$ sol is
ChemistrySurface ChemistryJEE AdvancedJEE Advanced 2009 (Paper 1)
Options:
  • A
    $\mathrm{Na}_2 \mathrm{SO}_4$
  • B
    $\mathrm{CaCl}_2$
  • C
    $\mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$
  • D
    $\mathrm{NH}_4 \mathrm{Cl}$
Solution:
2893 Upvotes Verified Answer
The correct answer is:
$\mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$
$\mathrm{Sb}_2 \mathrm{~S}_3$ is an anionic $\mathrm{sol}_2$, therefore cation of highest valency ( $\mathrm{Al}^{3+}$ in the present case) would be most effective coagulating agent.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.