## Isothermal Processes

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

Katelyn B 2E
Posts: 29
Joined: Fri Sep 29, 2017 7:05 am

### Isothermal Processes

Why does an isothermal reversible process have 0 change in internal energy? I know that isothermal processes have no change in temperature.

Kevin Ru 1D
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

### Re: Isothermal Processes

Internal energy is due to motion of particles in a system which depends on temperature. As you mentioned, temperature in isothermal process is constant, so the internal energy will also be constant. Therefore, the change in internal energy 0. Hope that helps!

AtreyiMitra2L
Posts: 169
Joined: Fri Sep 29, 2017 7:03 am
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### Re: Isothermal Processes

furthermore, it is important to note that for isothermal, reversible processes, the change in internal energy is 0 when they are ideal gases. Because they are ideal gases, there is no exhange in energy during the collisions.