Surface ChemistryMedium
Question
A colloidal solution is subjected to an electrical field. The particles move towards anode. The coagulation of same sol is studied using NaCl, BaCl2 and AlCl3 solutions. coagulating power should be
Options
A.NaCl> BaCl2 > AlCl3
B.BaCl2 > AlCl3 > NaCl
C.AlCl3 > BaCl2 > NaCl
D.BaCl2 > NaCl > AlCl3
Solution
The movement towers anode shows that sol is negative. For coagulation of negative sol. Cation with higher charge is more effective.
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