Hi,
I was wondering in what specific situations we would need to use w=-pdeltaV versus other work equations
Does the temperature need to be constant?
Thanks!
When to use this equation
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 58
- Joined: Thu Jul 13, 2017 3:00 am
- Been upvoted: 1 time
-
- Posts: 53
- Joined: Tue Oct 10, 2017 7:13 am
Re: When to use this equation
When the pressure is constant, we use w = -Pext
When temperature is constant (isothermal), we use w = -nRT ln (Vfinal/Vinitial)
When temperature is constant (isothermal), we use w = -nRT ln (Vfinal/Vinitial)
-
- Posts: 53
- Joined: Fri Sep 29, 2017 7:07 am
Re: When to use this equation
w = -nRT ln (Vfinal/Vinitial) is also used when the pressure is not kept at a constant.
-
- Posts: 52
- Joined: Thu Jul 13, 2017 3:00 am
-
- Posts: 60
- Joined: Fri Sep 29, 2017 7:04 am
Re: When to use this equation
Aijun Zhang 1D wrote:When the pressure is constant, we use w = -Pext
When temperature is constant (isothermal), we use w = -nRT ln (Vfinal/Vinitial)
Are these the only two scenarios we'll likely be dealing with? Thanks!
Return to “Calculating Work of Expansion”
Who is online
Users browsing this forum: No registered users and 1 guest