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Homework Help: Adiabatic Compressibility

  1. May 17, 2010 #1
    I have been asked to show that if an ideal gas is compressed isothermally its compressibility is 1/P whereas if the same gas is compressed adiabatically its compressibility is 1/yP

    Where y is gamma

    I have managed to do the first bit about isothermal compressibility, but cannot work out how to do the next bit.
  2. jcsd
  3. May 18, 2010 #2

    Andrew Mason

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    Define compressibility first. Then show us your work for the isothermal case.

    Write out the expression for compressibility in the adiabatic case (how are P and V related in a (reversible) adiabatic compression?).

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