Statement I: In the coagulation of a negative sol, the flocculating power of the three given ions is in the order: Al+3 Ba+2 Na+ Statement II: In the coagulation of a positive sol, the flocculating power of three given salts is in the order: NaCl Na2SO4 Na3PO4 In the light of above statements, choose the most appropriate answer from the options given below:

Question

Statement I: In the coagulation of a negative sol, the flocculating power of the three given ions is in the order: Al+3 > Ba+2 > Na+ Statement II: In the coagulation of a positive sol, the flocculating power of three given salts is in the order: NaCl > Na2SO4 > Na3PO4 In the light of above statements, choose the most appropriate answer from the options given below:

KollegeApply · Accepted Answer

Statement I is correct but statement II is incorrect. Explanation: For the coagulation of a negative sol, the flocculating power order is indeed: Al+3 > Ba+2 > Na+, because higher charge leads to greater coagulating power. However, in the coagulation of a positive sol, the order of flocculating power for anions is different; typically, it follows: [Fe(CN)6]4− > \ce{PO^{3-}4} > \ce{SO^{2-}4} > Cl−, which contradicts the given order NaCl > Na2SO4 > Na3PO4. Therefore, Statement I is correct but Statement II is incorrect.

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