## Definition of Isothermal Reactions

isochoric/isometric: $\Delta V = 0$
isothermal: $\Delta T = 0$
isobaric: $\Delta P = 0$

Alyssa_Hsu_2K
Posts: 55
Joined: Wed Sep 21, 2016 3:00 pm

### Definition of Isothermal Reactions

Suppose a reaction started out with T=290k. Then, it was heated to T=295K. Then, it was cooled back down to T=290K.
Would we still say this reaction overall is isothermal and thus delta U=0?

Bola_G_3H
Posts: 12
Joined: Wed Sep 21, 2016 2:56 pm

### Re: Definition of Isothermal Reactions

The delta T of the system would be zero if you are calculating the entire process: 290 to 295 to 290. Delta T = 290-290. If no work is done by the system during the heating and cooling, then Delta U = 0.

Juanalv326
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

### Re: Definition of Isothermal Reactions

Remember. Tfinal-Tinital, even though there are changes, ultimately you will go back down to the same temperature, so your response would become 0.

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