Question

The colloidal sol of $A{s}_2{S}_3$ prefers to adsorb :

• A. $N{O}_3^{\ominus }$
• B. $K^{\oplus }$
• C. $S^{2-}$
• D. $H^{\oplus }$

Answer 1

Answer: (C)

$S^{2-}$

As we know, the particles of $A{s}_2{S}_3$ sol in water are negatively charged. Therefore, colloidal sol of $A{s}_2{S}_3$ prefers to adsorb $S^{2-}$ ions.