The coagulating power of electrolytes having | vedclass

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Question

(B) According to the Hardy-Schulze rule,the coagulating power of an ion is directly proportional to the magnitude of its charge for a given sol. Arsen

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$Na^{+} < Ba^{2+} < Al^{3+}$

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(B) According to the Hardy-Schulze rule,the coagulating power of an ion is directly proportional to the magnitude of its charge for a given sol. Arsenic sulphide $(As_2S_3)$ sol is a negatively charged sol. Therefore,the coagulating power depends on the charge of the cation. The charges on the given ions are $+1$ for $Na^{+}$,$+2$ for $Ba^{2+}$,and $+3$ for $Al^{3+}$. Thus,the increasing order of coagulating power is $Na^{+} < Ba^{2+} < Al^{3+}$.

The coagulating power of electrolytes having ions $Na^{+}$,$Ba^{2+}$ and $Al^{3+}$ for arsenic sulphide sol increases in the order:

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