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Among the electrolytes Na2SO4, CaCl2, AI2(SO4)3 and NH4CI, the most effective coagulating

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Among the electrolytes Na2SO4, CaCl2, AI2(SO4)3 and NH4CI, the most effective coagulating agent for Sb2S3 sol is 

(a) Na2O4 

(b) CaCl2 

(c) Al2(SO4)3 

(d) NH4CI

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1 Answer

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Best answer

Correct option (c) Al2(SO4)3 

Explanation:

 Sb2S3 is an anionic sol, therefore cation of highest valen (Al3+ in the present case) would be most effective coagulating agent.

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