Which of the following has the minimum freezi | vedclass

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(C) The depression in freezing point is a colligative property,which depends on the van't Hoff factor $(i)$.$i$ for $NaCl$ is $2$ $(Na^+ + Cl^-)$.$i$

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One molal $CaCl_2$ solution

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(C) The depression in freezing point is a colligative property,which depends on the van't Hoff factor $(i)$.$i$ for $NaCl$ is $2$ $(Na^+ + Cl^-)$.$i$ for $KCl$ is $2$ $(K^+ + Cl^-)$.$i$ for $CaCl_2$ is $3$ $(Ca^{2+} + 2Cl^-)$.$i$ for urea is $1$ (non-electrolyte).Since the depression in freezing point $\Delta T_f = i 	imes K_f 	imes m$,the solution with the highest $i$ value will have the maximum depression in freezing point,resulting in the minimum freezing point.Therefore,$CaCl_2$ has the minimum freezing point.

Which of the following has the minimum freezing point?

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