Q. The ion that is more effective for the coagulation of ${As}_{2}S_{3}$ sol is
A) ${Ba}^{2 +}$
B) ${Na}^{+}$
C) ${PO}_{4}^{3 -}$
D) ${Al}^{3 +}$
Explanation
(d)
Since, ${As}_{2}S_{3}$ is a negatively charged sol, the ion bearing the highest positive charge, is more effective for its coagulation, $Al^{3 +}$has highest positive charge,i.e.,+3, so it is more effective for the coagulation of ${As}_{2}S_{3}$ sol.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.