The coagulation of 200 mL of a positive coll | vedclass

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(C) The flocculation value is defined as the minimum concentration of an electrolyte in millimoles per liter $(mmol \ L^{-1})$ required to cause the c

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$100$

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(C) The flocculation value is defined as the minimum concentration of an electrolyte in millimoles per liter $(mmol \ L^{-1})$ required to cause the coagulation of a sol.Given mass of $HCl = 0.73 \ g$.Molar mass of $HCl = 36.5 \ g \ mol^{-1}$.Number of moles of $HCl = \frac{0.73 \ g}{36.5 \ g \ mol^{-1}} = 0.02 \ mol$.Converting to millimoles: $0.02 \ mol 	imes 1000 = 20 \ mmol$.Since $20 \ mmol$ of $HCl$ causes coagulation in $200 \ mL$ of the colloid,the amount required for $1000 \ mL$ $(1 \ L)$ is:$	ext{Flocculation value} = \frac{20 \ mmol}{200 \ mL} 	imes 1000 \ mL = 100 \ mmol \ L^{-1}$.

The coagulation of $200 \ mL$ of a positive colloid took place when $0.73 \ g$ of $HCl$ was added to it. The flocculation value of $HCl$ for the colloid is

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