internal energy


Moderators: Chem_Mod, Chem_Admin

FrankieClarke2C
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

internal energy

Postby FrankieClarke2C » Thu Feb 28, 2019 4:55 am

Is the change in internal energy for irreversible expansion always 0?

Chem_Mod
Posts: 17698
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 404 times

Re: internal energy

Postby Chem_Mod » Thu Feb 28, 2019 6:45 am

No, only for isothermal irreversible process the change in internal energy is 0

David Sarkissian 1K
Posts: 29
Joined: Fri Sep 28, 2018 12:21 am
Been upvoted: 1 time

Re: internal energy

Postby David Sarkissian 1K » Tue Mar 12, 2019 2:49 pm

Shouldn't it be only isothermal, reversible reactions that have a = 0, not irreversible? I'm just confused because example 8.5 in the book says the same about reversible, opposed to irreversible.

Edit: Actually the example puts both a reversible and irreversible reactions = 0, so I'm even more confused now.

Jack DeLeon 1B
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: internal energy

Postby Jack DeLeon 1B » Tue Mar 12, 2019 3:04 pm

isothermal reactions have a deltaU of 0. not sure about reversible or irreversible


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

Who is online

Users browsing this forum: No registered users and 0 guests