The maximum coagulating power for precipitati | vedclass

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Question

(D) The $As_2S_3$ sol is a negatively charged sol. According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency

Vedclass · Accepted Answer

$0.1 \ N \ AlCl_3$

Vedclass · Answer

(D) The $As_2S_3$ sol is a negatively charged sol. According to the Hardy-Schulze rule,the coagulating power of an electrolyte depends on the valency of the cation or anion that neutralizes the charge on the colloidal particles. For a negatively charged sol,the coagulating power is determined by the cation. The higher the valency of the cation,the greater is its coagulating power. Comparing the cations in the given options: $A$: $Zn^{2+}$ $B$: $Na^+$ $C$: $Zn^{2+}$ $D$: $Al^{3+}$ Since $Al^{3+}$ has the highest valency $(+3)$,it will have the maximum coagulating power for the negatively charged $As_2S_3$ sol.

The maximum coagulating power for precipitating $As_2S_3$ sol is of

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