Question

Which of the following solution has highest boiling point. 01 m glucose and. 01 m k2so4 and. 01 m kno3 and. 01 m urea

Answer 1

The highest boiling point among 0.1m glucose 0.1m K2SO4 ,0.1mKNO2 and 0.1m urea is of 0.1m K2SO4.

●we know that elevation in boiling point is iKbm where

i=van't hoff factor

m is molality

Kb is boiling point constant

So Boiling point at constant concentration is directly propotional to to van't hoff factor.

●van't hoff factor depends on number of solute molecules.

●since number of solutes is maximum for K2SO4 that is 7 molecules hence maximum boiling point is for 0.1m K2SO4.