The elevation in boiling point for 1 molal solution of non-volatile solute A is 3   K . The depression…

The elevation in boiling point for 1 molal solution of non-volatile solute A is 3 K. The depression in freezing point for 2 molal solution of A in the same solvent is 6 K. The ratio of Kb and Kf i.e., Kb/Kf is 1:X. The value of X is

Solution

We know that

ΔTb=iKbm1ΔTf=iKfm2

And for non-volatile solute i=1.

ΔTbΔTf=Kb×1 Kf×2⇒36=12=KbKf×12

KbKf=11⇒X=1

Asked in: JEE Main 2022 (26 Jul Shift 2)

Practice more Solutions questions on Aicharya