For the coagulation of a negative sol, the species below, that has the highest flocculating power is :

Question:

For the coagulation of a negative sol, the species below, that has the highest flocculating power is :

 

  1. $\mathrm{SO}_{4}^{2-}$

  2. $\mathrm{Ba}^{2+}$

  3. $\mathrm{Na}^{+}$

  4. $\mathrm{PO}_{4}^{3-}$

Correct Option: , 2

Solution:

To coagulate negative sol, cation with higher charge has higher coagulation value.

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