For a positively charged sol , the flocculating power of `KCl , MgCl_(2) , Cr Cl_(3)` and `SnCl_(4)` will be in the order

Options

A. `MgCl_(2) lt KCl lt CrCl_(3) lt SnCl_(3)`
B. `KCl = MgCl_(2) = Cr Cl_(3) = SnCl_(4)`
C. `KCl lt MgCl_(2) lt CrCl_(3) lt SnCl_(4)`
D. `SnCl_(4) lt CrCl_(3) lt MgCl_(2) lt KCl`

Answer

B

Explanation

The anion produced by each of the electrolyte is `Cl^(-)` , which is a common anion and valency of `Cl^(-)` remains same , thus the flocculating power is constant for a positively charged sol.i.e., `KCl = MgCl_(2) = CrCl_(3) = SnCl_(4)`.