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Calculate the freezing point of a soluti...

Calculate the freezing point of a solution that contains 30 g urea in 200 g water. Urea is a non-volatile, non-electrolytic solid. `K_(f)` for water `=1.86^(@)C//m`.

A

`4.65^(@)C`

B

`-4.65^(@)C`

C

`-0.744^(@)C`

D

`+0.744^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaT_(f)=K_(f)xx m`
`=1.86xx(30)/(60)xx(1000)/(200)=4.65^(@)C`
`:.T_(f)=0-4.65= - 4.65^(@)C`
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