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Elevation in the boiling point for 1 mol...

Elevation in the boiling point for 1 molal solution of glucose is 2K. The depression in the freezing point for 2 molal solution of glucose in the same solvent is 2K. The relation between `K_(b) and K_(f)` is

A

`K_(b)=2K_(f)`

B

`K_(b)=K_(f)`

C

`K_(b)=1.5K_(f)`

D

`K_(b)=0.5K_(f)`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaT_(b)=iK_(b)m`
`2=(1)(K_(b))(1)`
`K_(b)=2`
`K_(b)=2`
`K_(b)=2K_(f)`
`DeltaT_(f)=iK_(f)m`
`2=(1)(K_(f))(2)`
`K_(f)=1`
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