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Unformatted text preview: For the reversible case… 2 2 1 1 ( ) ( ) V V ext V V w P V dV P V dV = = Important inequalities for both expansion and compression… , < irrev rev irrev rev q q w w These are algebraic inequalities. . the sign of each quantity is important Example: a cyclic process Show q and w as areas on indicator diagrams Heat capacity at constant volume Define heat capacity C v and discuss ( ) V V U C T T e = & Then v dU C dT = and 2 1 ( ) T v T U C T dT ∆ = Back to the cyclic process; consider an ideal gas Calculate q, w, and U ∆ for each step...
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 Spring '10
 Wyatt
 Physical chemistry, Thermodynamics, Enthalpy, pH, reversible process, irreversible isothermal expansion

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