1. Tardigrade
  2. Question
  3. Chemistry
  4. Given below are two statements: 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 In the light of the above statements, choose the most appropriate answer from the options given below :

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Q. Given below are two statements:
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 -
$NaCl > Na _{2} SO _{4}> Na _{3} PO _{4}$
In the light of the above statements, choose the most appropriate answer from the options given below :

NEETNEET 2022Surface Chemistry

Solution:

According to Hardy Schulze Rule statement 1 is correct. (Generally, the greater the valence of the flocculating ion added, the greater is its power to cause precipitation)
According to Hardy Schulze Rule statement 2 is incorrect