Question

he boiling point of a solution containing 0.20 gm of a
substance X in 20 gm of ether is 0.17 K higher than that
of pure ether. Calculate the molecular weight of x.
Kb = 2.16 (for 1 kg ether).

Answer 1

Explanation:

Given:

∆Tb = 0.17

mass of substance x = 0.20 gm

mass of solvent = 20 gm

kb for ether= 2.16

∆Tb = kb× m

0.17 = 2.16 × 0.20 × 1000/ M × 20

M= 124.44