From the following,which will have maximum co | vedclass

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(C) 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

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$0.1 \ N \ AlCl_3$

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(C) 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 ion carrying a charge opposite to that of the colloidal particles. For a negatively charged sol,the coagulating power increases with the increase in the valency of the cation. In the given options,the cations are $Zn^{2+}$,$Na^+$,$Al^{3+}$,and $Zn^{2+}$. The valencies are: $Zn^{2+} = +2$,$Na^+ = +1$,$Al^{3+} = +3$. Since $Al^{3+}$ has the highest valency $(+3)$,it will have the maximum coagulating power for the negatively charged $As_2S_3$ sol.

From the following,which will have maximum coagulating power for $As_2S_3$ sol?

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