# Problem: Yttrium(III) chloride dissolves in water according to: YCl3(s) → Y3+(aq) + 3 Cl-(aq). What is the boiling point of the solution when 0.1953 g of YCl3 (molar mass 195.3 g/mol) is dissolved in 10.0 g of H2O? (Kb of water is 0.512 °C/m.)

###### FREE Expert Solution

We’re being asked to list the given aqueous solutions in order of increasing boiling points.

Recall that the boiling point of a solution is higher than that of the pure solvent and the change in boiling point (ΔT­b) is given by:

The change in boiling point is also related to the molality of the solution:

$\overline{){{\mathbf{\Delta T}}}_{{\mathbf{b}}}{\mathbf{=}}{{\mathbf{imK}}}_{{\mathbf{b}}}}$

where:

i = van’t Hoff factor

m = molality of the solution (in m or mol/kg)

Kb = boiling point elevation constant (in ˚C/m) of the solvent

82% (463 ratings) ###### Problem Details

Yttrium(III) chloride dissolves in water according to: YCl3(s) → Y3+(aq) + 3 Cl-(aq). What is the boiling point of the solution when 0.1953 g of YCl3 (molar mass 195.3 g/mol) is dissolved in 10.0 g of H2O? (Kb of water is 0.512 °C/m.)