## Entropy Equations with Irreversible Paths

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

lizzygaines1D
Posts: 52
Joined: Thu Jul 13, 2017 3:00 am

### Entropy Equations with Irreversible Paths

The change in entropy equations with constant temperature, or change in volume work for reversible and irreversible changes, but does the equation that accounts for a change in temperature also work for an irreversible change?

Aijun Zhang 1D
Posts: 53
Joined: Tue Oct 10, 2017 7:13 am

### Re: Entropy Equations with Irreversible Paths

I think the equation delta S = q/T is only for the reversible question. (for only isothermal process)

Michelle Nguyen 2L
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

### Re: Entropy Equations with Irreversible Paths

Hmm that’s a good question; I’m not sure because it seems that the equation for change in entropy when temperature changes is derived from the constant temperature equation which only works for reversible pathways, yet the textbook doesn’t seem to specify that this second equation is only for reversible processes...