A colloidal solution of arsenious sulphide is most readily coagulated – InterviewSolution

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1.	A colloidal solution of arsenious sulphide is most readily coagulated by the addition of a normal solution ?A. `NaCl`B. `CaCl_(2)`C. `Na_(3)PO_(4)`D. `Al_(2)(SO_(4))_(3)`
Answer» Correct Answer - D Arsenious sulphide is negatively charged sol so more the charge on cation of electrolyte, more the efficiency of electrolyte for coagulation.

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