## temperature of a reversible reaction

$\Delta U=q+w$

Samantha Chung 4I
Posts: 77
Joined: Wed Oct 03, 2018 12:16 am

### temperature of a reversible reaction

It was mentioned today in lecture that the temperature of an reversible reaction both inside and outside the system has to be constant, why is this the case?

Jim Brown 14B Lec1
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

### Re: temperature of a reversible reaction

The reaction is not isolated and takes place in a heat reservoir. This way, even if the reaction is exothermic, the overall temperature will remain the same at the beginning and the end of the reaction.

Jake Gordon 1A
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

### Re: temperature of a reversible reaction

The delta T is essentially 0 because of the heat resevoir. When we talk about isothermal reversible expansion, isothermal refers to a constant "same" temperature even though as stated above their is a slight change in temp that is quickly replaced by the surroundings.

Elizabeth Gallmeister 1A
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Joined: Fri Sep 28, 2018 12:21 am

### Re: temperature of a reversible reaction

And from there, if deltaT is zero, it follows that deltaU = 0 and therefore q = -w.