change in internal energy
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 94
- Joined: Fri Sep 29, 2017 7:03 am
- Been upvoted: 1 time
change in internal energy
When can change in internal energy be equaled to heat transferred? When can it be equaled to work?
-
- Posts: 53
- Joined: Fri Jun 23, 2017 11:40 am
Re: change in internal energy
When there is no word done to the system, the change of internal energy is the same as the heat change. When there is no heat exchange, the change of internal energy is equal to the work done.
-
- Posts: 39
- Joined: Fri Sep 29, 2017 7:06 am
Re: change in internal energy
Change in internal energy can be equaled to heat transfer when there is no work done (volume of reactants = volume of products). Change of internal energy is equal to work done when there is no heat exchanged. This can be seen in the equation ΔU = q + w.
-
- Posts: 56
- Joined: Thu Jul 27, 2017 3:01 am
Re: change in internal energy
The fundamental equation necessary to understand this is that U = q + w (deltas implied)
When there is no work done on the system, U = q
When there is no heat transferred to or from the system, U = w
When there is no work done on the system, U = q
When there is no heat transferred to or from the system, U = w
-
- Posts: 50
- Joined: Sat Jul 22, 2017 3:01 am
Re: change in internal energy
deltaU = q + w. When no work is done, U=q. When no heat is transferred, U=w.
Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”
Who is online
Users browsing this forum: No registered users and 7 guests