## Delta U

$\Delta U=q+w$

melissa_dis4K
Posts: 106
Joined: Fri Sep 28, 2018 12:28 am

### Delta U

I know that for a reversible, isothermic process delta U is zero because there is no change in temperature. Is delta U =zero for irreversible process as well? And if so, why? Thank you!

Posts: 37
Joined: Mon Apr 23, 2018 3:00 am

### Re: Delta U

For irreversible processes, deltaU=q+w, so deltaU could be zero if q=-w. While it's possible, it's not ironclad like it is with reversible processes.

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