1. CHEM 433 – 10/11/11 III. 1st Law: “Machinery” (2.10-2.12)
- Properties of the Enthalpy (dH=?)
- Isothermal Compressibility
- The Joule Thompson Effect
READ: FINISH CHAPTER 2
HW # 4 DUE Friday
HW #3 (formerly #4) AVE = 23/30 (76%)

2. What is T for an ideal gas ?
How much does the volume change when 50 cm3 of H2O is subjected to 1000 atm of additional pressure?
T (H2O) = 4.95 x 10-5 atm-1.

3. Trust me - or Atkins:
U + pV is equal on both sides and thus constant.

4. James Prescott Joule
William Thompson - aka “Lord Kelvin”

7. For CO2  = K/atm.
By how much does the Temp change when CO2 expands (w/ constant enthalpy) across a 1 atm pressure difference?