Question

Most effective ion for the coagulation of $A{s}_2{S}_3$ sol is

• A. $A{l}^{3+}$
• B. $M{g}^{2+}$
• C. $C{l}^{-}$
• D. $S{O}_4^{2-}$

Answer 1

The correct option is A $A{l}^{3+}$

$A{s}_2{S}_3$ is negatively charged sol. It can be easily coagulated by cation having higher charge.