Among the electrolytes $N a_{2} S O_{4}, C a C l_{2}, A l_{2} (S O_{4})_{3}$ and $N H_{4} C l$ , the most effective coagulating agent for $S b_{2} S_{3}$ sol is

$N a_{2} S O_{4}$

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$C a C l_{2}$

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$A l_{2} (S O_{4})_{3}$

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$N H_{4} C l$

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Solution

The correct option is C
$A l_{2} (S O_{4})_{3}$

$S b_{2} S_{3}$ is a negative (anionic) sol. According to Hardy Schulze rule, greater the valency of cationic coagulating agent, higher its coagulating power. Therefore, $A l_{2} (S O_{4})_{3}$ will be the most effective coagulating agent in the present case.

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Similar questions

N a_{2} S O_{4}, C a C l_{2}, A l_{2} (S O_{4})_{3}

N H_{4} C l

S b_{2} S_{3}

N a_{2} S O_{4}, C a C l_{2}, A l_{2} (S O_{4})_{3}

N H_{4} C l

S b_{2} S_{3}

K_{2} S O_{4}, B a C l_{2}, A l_{2} (S O_{4})_{3}

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K_{2} S O_{4}, B a C l_{2}, A l_{2} (S O_{4})_{3}

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S b_{2} S_{3}

Among the following electrolytes, which is the most effective coagulating agent for $S b_{2} S_{3}$ solution?

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