A) \[NaCl\]
B) \[KCl\]
C) \[BaC{{l}_{2}}\]
D) \[AlC{{l}_{3}}\]
Correct Answer: D
Solution :
The amount of electrolyte required to coagulate a fixed amount of a solution depends upon the valency of the flocculation ion. The flocculating power of the various ions follows the following order, larger the valency lesser will be coagulating value. \[A{{l}^{3+}}>M{{g}^{2+}}>N{{a}^{+}}\], hence lowest coagulation value is of \[AlC{{l}_{3}}\].
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