A solution of solute X in benzene boils at 0.126 oC higher than benzene. What is the molality of the solution? (Kb for benzene = 2.52 K/m)

0.05 2 1 20

0.05

Elevation in boiling point, ΔTb = Kb x m m = \(\frac{ΔTb}{Kb}\) m = \(\frac{0.126}{2.52}\) = 0.05 m