Enthalpy of Fusion
| Formula / Notation | Solid→Liquid at T_m; ΔH_fus > 0; e.g., H₂O: +6.01 kJ/mol |
|---|---|
| Also Known As | Heat of fusion, latent heat of melting, molar enthalpy of fusion, ΔH_fus |
What is Enthalpy of Fusion?
The heat energy required to convert one mole of a solid into a liquid at its melting point, at constant pressure. Also called latent heat of fusion. It reflects the energy needed to overcome the intermolecular forces holding the solid structure together.
Formula & Notation
Other Names / Synonyms: Heat of fusion, latent heat of melting, molar enthalpy of fusion, ΔH_fus
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 heat energy required to convert one mole of a solid into a liquid at its melting point, at constant pressure. Also called latent heat of fusion. It reflects the energy needed to overcome the intermolecular forces holding the solid structure together.
Enthalpy of fusion data is used in: phase diagram construction, calculating energy needs for industrial melting operations, designing thermal energy storage systems (phase change materials, PCMs), assessing purity by DSC (melting point depression from impurities), and in food science (chocolate temp…
Industrial melting operations require energy input management to prevent accidental solidification blocking equipment or energy surges causing overheating. Handling molten materials at their fusion temperatures presents severe burn hazards.
The formula or notation for Enthalpy of Fusion is: Solid→Liquid at T_m; ΔH_fus > 0; e.g., H₂O: +6.01 kJ/mol