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internal energy

Posted: Thu Feb 28, 2019 4:55 am
Is the change in internal energy for irreversible expansion always 0?

Re: internal energy

Posted: Thu Feb 28, 2019 6:45 am
No, only for isothermal irreversible process the change in internal energy is 0

Re: internal energy

Posted: Tue Mar 12, 2019 2:49 pm
Shouldn't it be only isothermal, reversible reactions that have a $\Delta U$= 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 $\Delta U$= 0, so I'm even more confused now.

Re: internal energy

Posted: Tue Mar 12, 2019 3:04 pm
isothermal reactions have a deltaU of 0. not sure about reversible or irreversible