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Inserir no projetoP3020911Determinação da entalpia de fusão de uma substância pura com Cobra3

Principle

When a solid melts, energy is required for the destruction of the crystal lattice. A substance whose melting point lies slightly below room temperature is first cooled until it solidifies and then melted in a calorimeter. The melting enthalpy is calculated from the decrease in temperature due to the melting process which is measured in the calorimeter.

Tasks

  1. Take a temperature-time-diagram for the melting process of dioxan.
  2. Calculate the melting enthalpy and entropy of 1,4-dioxan.

What you can learn about

  • Heat capacity
  • Melting point
  • Latent heat
  • Calorimetry
  • Gibbs' phase rule
  • Enthalpy of sublimation
  • Enthalpy of vaporisation