## Lecture [ENDORSED]

$\Delta S = \frac{q_{rev}}{T}$

camrynpatterson3C
Posts: 44
Joined: Fri Sep 29, 2017 7:07 am

### Lecture

In lecture, Lavelle said "in a thermodynamic analysis, systems are often approximated as reversible". Doe this mean that any system we're calculating something for, we can assume that and can use the equation q(rev)=-w?

Priyanka Bhakta 1L
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

### Re: Lecture  [ENDORSED]

Yes, exactly! Since we assume/approximate that the systems we see in thermodynamics are reversible, we can use the q(rev)=-w and deltaS=q(rev)/T equations in our problems.