## Constant Pressue

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

taywebb
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Constant Pressue

If the problem does not note a pressure change can we assume that no change in pressure was made?

Rami_Z_AbuQubo_2K
Posts: 89
Joined: Thu Jun 07, 2018 3:00 am

### Re: Constant Pressue

Most of the time it will given an indicator that pressure has not changed, but in the case that it doesn't, I think it is safe to assume that there is not pressure change. With that being said, just read the problem carefully.

Iona Pay
Posts: 43
Joined: Fri Sep 28, 2018 12:15 am

### Re: Constant Pressure

Yes, that's usually fine. Another indicator that pressure might be constant is if the problem mentions "standard conditions" - this implies a constant temperature of 273K and a constant pressure of 1 atm.

Dong Hyun Lee 4E
Posts: 68
Joined: Fri Sep 28, 2018 12:23 am

### Re: Constant Pressue

Yes if there is no mention of a pressure change, it is usually safe the assume that the pressure is being kept constant.