Interactive Self-Study Module: Fugacity of a Single Component
Department of Chemical and Biological Engineering, University of Colorado Boulder 

This module uses screencasts and interactive simulations to explain the driving force for single-component phase equilibrium. It then provides example problems to allow the user to test themselves. We suggest reviewing the single-component phase diagrams module before using the learning resources in the following order:

    1. Attempt to answer the multiple choice ConcepTests before watching the screencasts or working with the simulations.
    2. Watch the three screencasts that describe fugacity. 
    3. Use the three interactive simulations to further understand the driving force for mass transfer.
    4. Try to solve the two example problems before watching the solutions in the screencasts.
    5. Answer the ConcepTests.

    Fugacity is used to determine the direction of mass transfer between phases and to determine when phases are in equilibrium.

    This module is intended for a Thermodynamics course.

    Before studying this module, you should:

    After studying this module, you should be able to:
    1. Calculate fugacity of a single-component ideal gas.
    2. Calculate the fugacity of a liquid or a solid. 
    3. Calculate the fugacity of a non-ideal gas.
    4. Determine the direction of mass transfer between phases.
    5. Calculate the fugacity of a liquid or solid at high pressure using the Poynting correction.
    6. Explain the criteria for single-component phase equilibrium in terms of fugacity.
    7. Explain why the fugacity of a saturated liquid is close to the vapor pressure of the liquid.