Example 8.6 (b)


Moderators: Chem_Mod, Chem_Admin

Hannah Guo 3D
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Example 8.6 (b)

Postby Hannah Guo 3D » Mon Jan 15, 2018 3:50 pm

I understand everything except the statement in part b: because U is independent of volume for an ideal gas, delta U (step 2) = 0. Please help!

The question asks:
Calculate the final temperature and the change in internal energy wen 500. J of energy is transferred as heat to 0.900 mol O2(g) at 298 K and 1.00 atm at (a) constant volume; (b) constant pressure. Treat the gas as ideal.

Sorry that I can't attach the long answer to this question, but if someone can help me out, I will be deeply appreciated.

sahiltelang-Discussion 1J
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Example 8.6 (b)

Postby sahiltelang-Discussion 1J » Mon Jan 15, 2018 4:00 pm

you have to set up the -PV=nRT and for part a make volume constant and make it -deltaP*V=-deltan*R*T. For part b do the same thing, but then make it -P*deltaV=-deltan*R*T. This will give you work done.

Hannah Guo 3D
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Re: Example 8.6 (b)

Postby Hannah Guo 3D » Tue Jan 16, 2018 11:19 am

Thank you, but can you please explain more in detailed? I'm still confused. Thank you!


Return to “Concepts & Calculations Using First Law of Thermodynamics”

Who is online

Users browsing this forum: No registered users and 1 guest