Surface ChemistryHard

Question

An arsenious sulphide sol carries a negative charge. The maximum precipitating power of this sol is : possessed by :

Options

A.K2SO4
B.CaCl2
C.Na3PO4
D.AlCl3

Solution

- ve charged sol is coagulated by cation of electrolyte. More the charge on cation, higher the precipitating power.

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