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Inserir no projetoP3020411Coeficiente adiabático dos gases – Oscilador de Flammersfield

Principle

The vaporisation of a liquid occurs with heat absorption. To determine the enthalpy of vaporisation, a known mass of the liquid which is to be investigated is vaporised in a special vaporisation vessel in a current of air. The quantity of heat absorbed, which corresponds to the enthalpy of vaporisation, can be calorimetrically determined.

Tasks

  1. Determine the molar enthalpy of vaporisation of diethyl ether and methanol.
  2. Calculate the molar entropies of vaporisation and discuss the results under consideration of Trouton's rule.

What you can learn about

  • Enthalpy of vaporisation
  • Enthalpy of condensation
  • Enthalpy of sublimation
  • Vapour pressure
  • Entropy of vaporization
  • Clausius-Clapeyron equation
  • Trouton's rule
  • Law of thermodynamics
  • Calorimetry