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

Options

A. `K_(b)=2K_(f)`
B. `K_(b)=K_(f)`
C. `K_(b)=1.5K_(f)`
D. `K_(b)=0.5K_(f)`

Explanation

`DeltaT_(b)=iK_(b)m" "DeltaT_(f)=iK_(f)m`
`2=(1)(K_(b))(1)" "2=(1)(K_(f))(2)`
`K_(b)=2" "K_(f)=1`
`K_(b)=2K_(f)`