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Enthalpy (Read 1924 times)
Gerrit-Jan Linker
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09.04.09 at 09:50:19
Enthalpy (H) is a thermodynamic property of a thermodynamic system. It is used to calculate the heat transfer during a quasistatic process taking place in a closed thermodynamic system under constant pressure (isobaric process).  
For quasistatic processes under constant pressure, the change in enthalpy ΔH is equal to the change in the internal energy of the system, plus the work that the system has done on its surroundings. This means that the change in enthalpy under such conditions is the heat absorbed by a chemical reaction.
The change in enthalpy ΔH of a system is equal to the release or absorption of heat by a system at constant pressure.
H = U + pV
  H = Enthanpy  
  U = Internal energy
  p = pressure
  V = Volume  
General Chemistry, Atkins, Beran
Enthalpy - Wikipedia
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« Last Edit: 25.04.10 at 18:55:10 by Gerrit-Jan Linker »  

Gerrit-Jan Linker
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