Ideal Gas Partition: Final Temp & Total Energy Change

AI Thread Summary
The discussion centers on two ideal gases separated by a partition, with specific parameters for each gas. The final temperature of the system is determined to be the average of the two initial temperatures when the number of molecules and volumes are equal. For part b, the total change in the quantity H is derived from the differential equation dH=dU+Vdp, while part c involves evaluating the change in quantity A using dA=(dU+pdV)/T. The user has successfully calculated the final temperature but is seeking assistance with the evaluations for parts b and c. The focus remains on understanding the thermodynamic changes in the system.
oxman
Messages
19
Reaction score
0
Two ideal gases are separated by a partition which does not allow molecules to pass from one volume to the other. Gas 1 has: N1, V1, T1, Cv1 for the number of molecules, volume it occupies, temperature in kelvin, and specific heat per molecule at constant volume respectively. Gas 2 has: N2, V2, T2, Cv2. The two gases are in thermal contact and reach a final temperature

a) find the final temperature and the total change in energy of the combined system. Check your answer for the final temperature when N1=N2, V1=V2. Cv1=Cv2

b)Evaluate the total change ina quantity H whose differential change is dH=dU+Vdp for each component and for the entire system

c)evaluate the total change in a quantity A whose differential change is dA=(dU+pdV)/T for each component and for the entire system

I am having trouble with b and c

U=NVCvdT

I already solved for the final temperature for part a, and when evaluated at equal N and V i got Tf=(T2+T1)/2
 
Physics news on Phys.org
****?
 
Thread 'Question about pressure of a liquid'

Thread 'Question about pressure of a liquid'

I am looking at pressure in liquids and I am testing my idea. The vertical tube is 100m, the contraption is filled with water. The vertical tube is very thin(maybe 1mm^2 cross section). The area of the base is ~100m^2. Will he top half be launched in the air if suddenly it cracked?- assuming its light enough. I want to test my idea that if I had a thin long ruber tube that I lifted up, then the pressure at "red lines" will be high and that the $force = pressure * area$ would be massive...
View full post »

Thread 'Why is the 3 body problem unsolvable? And what will happen if someone solves it?'

I feel it should be solvable we just need to find a perfect pattern, and there will be a general pattern since the forces acting are based on a single function, so..... you can't actually say it is unsolvable right? Cause imaging 3 bodies actually existed somwhere in this universe then nature isn't gonna wait till we predict it! And yea I have checked in many places that tiny changes cause large changes so it becomes chaos........ but still I just can't accept that it is impossible to solve...
View full post »

Similar threads

I When does the ideal gas equation break down?
Replies
5
Views
2K
I Reversible compression of a gas - faulty reasoning?
Replies
2
Views
1K
How Does Thermal Equilibrium Affect Ideal Gases in a Partitioned System?
Replies
4
Views
2K
I How Do You Calculate Initial Pressure and Final Volume in Adiabatic Expansion?
Replies
7
Views
2K
Ideal gas-thermodynamics, thermal equilibrium
Replies
17
Views
3K
I Question regarding dh, du, cp, cv for ideal gases
Replies
3
Views
2K
I Solving Adiabatic Process for Two Compartments
Replies
1
Views
2K
Mixing two ideal gases with different V, T at constant pressure
Replies
16
Views
3K
Semi-Classical/Classical derivation of ideal gas partition function
Replies
1
Views
3K
Thermodynamics: Two gases in a container
Replies
1
Views
559

Hot Threads

Recent Insights

Back
Top