Energy Balances with Reaction: Summary
The answers to the ConcepTests are given below and will open in a separate window.
Key points from this module:
- The equation relating initial pressure and temperature to final temperature and pressure for an adiabatic reversible process for an ideal gas is the same for a closed system and for a steady-state flow system.
- When an ideal gas is compressed adiabatically, its temperature increases.
- When an ideal gas is expanded adiabatically, its temperature decreases.
From studying this module, you should now be able to:
- Reference states for enthalpies need to be clearly specified in an energy balance.
- An energy balance for a reactor can contain a heat of reaction term explicitly or heats of formation can be incorporated into individual enthalpies.
- An inert, even though not involved in a reaction, can affect the outlet temperature or the amount of heat added or removed.
Prepared by John L. Falconer, Department of Chemical and Biological Engineering, University of Colorado Boulder