## Isothermal systems [ENDORSED]

$\Delta U=q+w$

Posts: 12
Joined: Wed Sep 21, 2016 2:58 pm

### Isothermal systems

Since reversible reactions are isothermal will the change in internal energy always be zero meaning that heat and work will have the same magnitudes but different signs? Also in an isolated system, is temperature constant thus the change in internal energy is zero or is that only isothermal systems? Thanks!

Emma Cole 3F
Posts: 13
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Isothermal systems  [ENDORSED]

Yes, in a reversible reaction, the change in internal energy will be zero and I think that that also means that heat and work will have the same magnitudes but different signs. In an isolated system, there is also no change in internal energy due to the fact that no matter or heat can be transferred.