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Depression in Freezing Point

The experimen...

Question

The experimental depression in freezing point of a dilute solution is $0.025 K$ . If the van 't Hoff factor (i) is $2.0$ , the calculated depression in freezing point (in $K$ ) is:

0.00125

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0.025

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0.0125

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0.05

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Solution

The correct option is C $0.0125$
Van't Hoff factor (i) = $\frac{e x p e r i m e n t a l v a l u e o f c o l l i g a t i v e p r o p e r t y}{c a l c u l a t e d v a l u e o f c o l l i g a t i v e p r o p e r t y}$
$\Rightarrow (i) = \frac{0.025}{x}$
$\Rightarrow x = \frac{0.025}{2} = 0.0125 K$
Answer is option C.

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