Question

For coagulation of arsenious sulphide sol which salt solution will be more effective

Answer 1

ALUMINIUM CHLORIDE SALT WILL BE MORE EFFECTIVE.

Answer 2

For coagulation of Arsenious Sulphide solution, $AlCl_{3}$ salt solution will be more effective.  

Explanation:

Arsenious sulphide solution is a negatively charged solution so its effective solution is $Al^{3+}$ cation with maximum charge will be effective for coagulation. Coagulation is a process of mixing chemicals to suspend tiny dusts in the water to cluster together.

The clustered particles are settled down in the basin that is removed by doing the filtration process. Filtration is the method of removing small particles from the solution or water.