2. Reversible and Irrev Processes Heat Capacity

2. Reversible and Irrev Processes Heat Capacity - For the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
2. Reversible and Irreversible Processes; Heat capacities Read in text: Sections 2.3 (b)-(e), 2.4 (b) Exercises: 2.2(b), 2.4(b), 2.13(b) skip the part on enthalpy Problem: 2.6 (p. 73) --------------------------------------------------------------------------------------------------------- Calculating the pV work… Expansion into a vacuum Expansion against constant external pressure Reversible vs. irreversible isothermal expansion Plot these processes on indicator diagram The limiting reversible process. . ‘almost’ a succession of equilibrium states. Why is the reversible process called ‘reversible’?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

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...
View Full Document

This note was uploaded on 05/18/2010 for the course CH 353 taught by Professor Wyatt during the Spring '10 term at University of Texas-Tyler.

Page1 / 2

2. Reversible and Irrev Processes Heat Capacity - For the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online