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: - Chemistry MCQ NEET 2022 2026 | ExamTest.live

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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 the three given salts is in the order: NaCl > Na_{2} SO_{4} > Na_{3} PO_{4}

Solution & Step-by-step Explanation

According to the Hardy-Schulze Rule, the greater the valence of the coagulating ion, the greater its power to cause coagulation.Statement I is correct: For a negative sol, we need cations. Power order: Al^{3 +} (z = 3) > Ba^{2 +} (z = 2) > Na^{+} (z = 1) .Statement II is incorrect: For a positive sol, we need anions. The order should be PO_{4}^{3 -} > SO_{4}^{2 -} > Cl^{-}, meaning Na_{3} PO_{4} > Na_{2} SO_{4} > NaCl .

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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 the three given salts is in the order: NaCl > Na_{2} SO_{4} > Na_{3} PO_{4}

Both Statement I and Statement II are correct.

Both Statement I and Statement II are incorrect.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

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