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Question

Of the following 0.10 m aqueous solution, which one will exhibit the largest freezing point depression?


A

KCl

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B

C6 H12 O6

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C

Al2(SO4)3

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D

K2SO4

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Solution

The correct option is C

Al2(SO4)3


ΔTf=i×Kf×m
So, ΔTfi (van't Hoff factor)
SaltiKCl2C6H12O61Al2(SO4)35K2SO43
Hence, i is maximum i.e., 5 for Al2(SO4)3


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