Aluminium hydroxide forms a positively charged sol. Which of the follo – InterviewSolution

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1.	Aluminium hydroxide forms a positively charged sol. Which of the following ionic substances should be most effective in coagulating the sol?A. `NaCl`B. `CaCl_(2)`C. `Fe_(2)(SO_(4))_(3)`D. `K_(3)PO_(4)`
Answer» Correct Answer - D `Al(OH)_(3)` is positively charged sol. `K_(3)PO_(4)` has greater negative charge. Hence, it is most effective in coagulation of `AlOH)_(3)` sol.

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