Heat of Fusion Calculator

Calculate Phase Change Energies and Melting Processes

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Heat of Fusion Energy Calculator

Calculate energy required for phase change using heat of fusion.

Energy Required: - J

Heat of Fusion Calculator

Calculate heat of fusion from energy and mass data.

Heat of Fusion: - J/g

Total Phase Change Energy Calculator

Calculate total energy including heating, phase change, and cooling.

Initial Heating

Phase Change

Final Heating

Total Energy: - J

Understanding Heat of Fusion

What is Heat of Fusion?

Heat of fusion is the energy required to convert a substance from solid to liquid at its melting point. Key concepts include:

  • Phase transition energy
  • Latent heat
  • Melting point
  • Energy absorption

Common Values

Heat of fusion varies by material:

  • Water: 334 J/g
  • Lead: 205 J/g
  • Mercury: 88.3 J/g
  • Copper: 401 J/g
  • Iron: 397 J/g

Phase Change Process

Important aspects include:

  • Temperature stability
  • Energy absorption
  • Molecular arrangement
  • Intermolecular forces
  • Pressure effects

Applications

Heat of fusion is used in:

  • Materials processing
  • Energy storage
  • Metallurgy
  • Food science
  • Climate control

Advanced Topics

Related concepts include:

  • Supercooling
  • Nucleation
  • Crystal growth
  • Phase diagrams
  • Thermodynamic cycles

Essential Heat of Fusion Formulas

Fusion Energy

Q = m × ΔHfusion

Heat of Fusion

ΔHfusion = Q/m

Total Phase Change

Qtotal = m(csΔT1 + ΔHf + clΔT2)