## Reversible or Irreversible

$\Delta U=q+w$

Payton Kammerer 2B
Posts: 49
Joined: Tue May 01, 2018 3:00 am

### Reversible or Irreversible

I have the last edition of the textbook, and one of the questions describes a situation in which 40.0 heat energy is transferred from a large reservoir at 800.K to one at 200.K. It then asks for the entropy change. With so little detail provided, how can I tell if this heat transfer is reversible or not?

Payton Kammerer 2B
Posts: 49
Joined: Tue May 01, 2018 3:00 am

### Re: Reversible or Irreversible

This should have been in the entropy section, sorry!