1. CHEM 433 - 9/27/11 III. A. 1st Law of Thermodynamics (Chapter 2)
- expansion work (Rev isothermal)
- Heat Transactions (2.4)
—> Heat Capacity
• READ: Chapter #2 (1 – 4)

2. Constant Pressure Expansion… w = –pextV

3. Isothermal Reversible Expansion… w = –nRTln(V2/V1)
More work in this case: reversible system is pushing against maximum possible pressure…

4. A constant volume a.k.a. “Bomb” Calorimeter…

5. How much energy is needed to heat 1 mol of CO2 (g) from 298K to 348K (at constant volume)?
What does this process look like on a plot of p vs. V?
1.0 kJ p T2 T1 V