Textbook Problem 4B11
Moderators: Chem_Mod, Chem_Admin
-
Shannon Moore 2L
- Posts: 103
- Joined: Wed Feb 26, 2020 12:17 am
Textbook Problem 4B11
I understand that during melting heat (+q) is absorbed and during condensation heat is released (-q), but how do we obtain positive/negative w values for these processes?
-
Shannon Moore 2L
- Posts: 103
- Joined: Wed Feb 26, 2020 12:17 am
-
shevanti_kumar_1E
- Posts: 116
- Joined: Wed Sep 30, 2020 9:40 pm
- Been upvoted: 1 time
Re: Textbook Problem 4B11
Delta U=q+w
During melting heat is absorbed so q is positive. The change is occurring at a constant temperature so the change in energy=0 so w has to be negative.
During condensation heat is released and q is negative. Similarly the change is occurring at a constant temperature so the change in energy=0 so w has to be positive.
During melting heat is absorbed so q is positive. The change is occurring at a constant temperature so the change in energy=0 so w has to be negative.
During condensation heat is released and q is negative. Similarly the change is occurring at a constant temperature so the change in energy=0 so w has to be positive.
Return to “Phase Changes & Related Calculations”
Who is online
Users browsing this forum: No registered users and 9 guests