Question

Arrange the following electrolytes in increasing order of coagulation power for $As _{2} S _{3}$ sol. :-

• A. $A _{1}< A _{2}< A _{3}< A _{4}$
• B. $A _{1}> A _{2}> A _{3}> A _{4}$
• C. $A _{2}< A _{4}< A _{1}< A _{2}$
• D. $A _{2}< A _{3}< A _{4}< A _{1}$

Answer 1

Answer: (A)

$As _{2} S _{3}$ is an example of $(-)$ vely charged colloidal solution. So $\uparrow $valency of $(+)$ charge; $\uparrow$ coagulation power.
$A _{1}> A _{2}> A _{2}> A _{1}$