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The amount of urea to be dissolved in 50...

The amount of urea to be dissolved in `500` cc of water `(K_(f)=1.86)` to produce a depresssion of `0.186^(@)C` in the freezing point is :

A

9 g

B

6 g

C

3 g

D

`0.3g`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaT_(f)=(100xxK_(f)xxw)/(mxxW)`
`:.0.186=(100xx18.6xxw)/(60xx500)orw=3g`
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