An arsenious sulphide sol carries a nega...

An arsenious sulphide sol carries a negative charge the maximum precipitating power fo this sol is possessed by

A

`AlCl_(3)`

B

`NaCl`

C

`CaF_(2)`

D

Glucose

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The correct Answer is:

B

According to Hardy-Schulze law coagulation power `prop` valency of the counter ion.

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