The freezing point depression of a 0.01 m aq | vedclass

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Question

(B) The formula for freezing point depression is $\Delta T_f = i 	imes K_f 	imes m$. Given $\Delta T_f = 0.0054$,$K_f = 1.80$,and $m = 0.01$. Substi

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$[Pt(NH_3)_4Cl_2]Cl_2$

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(B) The formula for freezing point depression is $\Delta T_f = i 	imes K_f 	imes m$. Given $\Delta T_f = 0.0054$,$K_f = 1.80$,and $m = 0.01$. Substituting the values: $0.0054 = i 	imes 1.80 	imes 0.01$. $i = \frac{0.0054}{0.018} = 3$. Since the van't Hoff factor $i = 3$,the complex dissociates into $3$ ions in the solution. Among the options,$[Pt(NH_3)_4Cl_2]Cl_2$ dissociates as $[Pt(NH_3)_4Cl_2]^{2+} + 2Cl^-$,which gives $1 + 2 = 3$ ions. Therefore,the correct formula is $[Pt(NH_3)_4Cl_2]Cl_2$.

The freezing point depression of a $0.01 \ m$ aqueous solution of $[Pt(NH_3)_4Cl_4]$ is $0.0054^\circ C$. If $K_f$ for water is $1.80 \ K \ kg \ mol^{-1}$,what is the correct formula for the complex?

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