## Q rev?

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

Grace_Stevenson_1A
Posts: 49
Joined: Wed Sep 21, 2016 2:57 pm

### Q rev?

In the equation delta S=q rev/T, what does rev stand for and how do you get that value? Thank you!

Pauline Tze 3B
Posts: 57
Joined: Sat Jul 09, 2016 3:00 am
Been upvoted: 1 time

### Re: Q rev?

Hi Grace!
rev stands for reversible and you can get this value by solving for q (heat) in different ways depending on the problem you're being asked. For example, you might combine it with q = C delta T or if it's an isothermal reversible problem, then you can deduce change in internal energy (delta U) will be 0, so q = -w and you can combine the delta S = q (rev)/T with any work equation.

I hope that helps!