Vaporization
| Formula / Notation | Liquid → Gas; ΔHvap > 0; Clausius-Clapeyron: ln(P₂/P₁) = -ΔHvap/R(1/T₂-1/T₁) |
|---|---|
| Also Known As | Evaporation, boiling, liquid-to-gas transition, volatilisation |
What is Vaporization?
The phase transition from liquid to gas, which can occur by evaporation (at the surface, below boiling point) or boiling (throughout the liquid, at boiling point). Vaporization is endothermic; the enthalpy of vaporization is the heat required to vaporize one mole of liquid.
Formula & Notation
Other Names / Synonyms: Evaporation, boiling, liquid-to-gas transition, volatilisation
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The phase transition from liquid to gas, which can occur by evaporation (at the surface, below boiling point) or boiling (throughout the liquid, at boiling point). Vaporization is endothermic; the enthalpy of vaporization is the heat required to vaporize one mole of liquid.
Vaporisation is the basis of distillation used to separate and purify liquids. Steam generation for power production and heating relies on vaporisation. Industrial drying processes remove water by controlled vaporisation.
Volatile flammable liquids that vaporise readily present fire and explosion risks. Rapid vaporisation of cryogenic liquids can cause asphyxiation by displacing oxygen. Vaporisation of toxic liquids creates inhalation hazards.
The formula or notation for Vaporization is: Liquid → Gas; ΔHvap > 0; Clausius-Clapeyron: ln(P₂/P₁) = -ΔHvap/R(1/T₂-1/T₁)