Boiling Point Elevation Calculator
Calculate boiling point elevation due to solutes using colligative properties and van't Hoff factor.
Enter Solution Data
mol/kg
1 for non-electrolytes, 2+ for electrolytes
°C·kg/mol
mol/L
g/mL
%
g/mol
mol/kg
Results
Enter solution data to calculate boiling point elevation
Boiling Point Elevation
Formula
ΔTb = i × Kb × m
- • ΔTb = Boiling point elevation
- • i = Van't Hoff factor
- • Kb = Boiling point elevation constant
- • m = Molality
Colligative Properties
- • Depends only on particle concentration
- • Independent of solute identity
- • Van't Hoff factor accounts for dissociation
- • Used in antifreeze, cooking
Common Solvent Constants
Kb Values (°C·kg/mol)
- • Water: 0.512
- • Ethanol: 1.22
- • Benzene: 2.53
- • Chloroform: 3.63
- • Acetic acid: 3.07
- • Carbon tetrachloride: 5.03
Van't Hoff Factors
- • Non-electrolytes: 1
- • NaCl: 2 (complete dissociation)
- • CaCl₂: 3 (complete dissociation)
- • Na₂SO₄: 3 (complete dissociation)
- • Weak electrolytes: 1-2