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The freezing point (.^(@)C) of a solutio...

The freezing point `(.^(@)C)` of a solution containing `0.1 g` of `K_(3)[Fe(CN)_(6)]` (molecular weight 329) on `100 g` of water `(K_(f)=1.86 K kg mol^(-1))`

A

`2.3 xx 10^(-2)`

B

`5.7 xx 10^(-2)`

C

`5.7 xx 10^(-3)`

D

`-1.20 xx 10^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaT_(f)=iK_(f)m = 4 xx 1.86 xx (0.1/329)xx(1000/100)`
(For `K_3+[Fe(CN)_6]hArr3K_(o+)+Fe(CN)_6^(3-))`
i=4
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