Review

1
????(??)

1. Review
2. Applications

2006-12-6
2
(No Transcript)
3

• Heat is energy that is transferred from one body
  to another because of a difference in temperature.

4

• dUdQdW

5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8

• Molar Specific Heats
• QnCv?T (Cvmcv/n)
• QnCp?T (Cpmcp/n)

9
(No Transcript)
10
for the same ?T Qv?U (dUdQ-PdV)
Qp?UP?V Qp-QvP?V nCp?T-nCv?TP(nR ?T/P)
Cp-CvR
11

• an ideal monatomic gas
• Qv?U
• Because U3nRT/2
• Thus ?U3nR?T/2nCv?T
• Or Cv3R/2

12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
Adiabatic expansion dUdQ-PdV-PdV (since
dQ0) on the other hand dUnCv?T so nCv?T
PdV0 From PVnRT, we have PdVVdPnRdT and
nCv(PdVVdP)/nR PdV0 or (CvR)PdVCvVdP0
18
Since CpCvR So CpPdVCvVdP0 Or
(Cp/Cv)PdVVdP0 Define ? Cp/Cv dP/P
?dV/V0 lnP ?lnVC Therefore PV?C
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)