- #1
weng cheong
- 22
- 0
how can heat change between system and surrounding be reversible?
du=q-w'
in this case, heat change, i reckon
a)since u is state function, there is no change in U, thus change in u is 0
b) 0=q-w' hence q=w' , all the heat transferred is spent on doing work
c) in order to make this reversible, w' must be maximum, so does the q1)does it mean that if i would like to get a reversible change, the amount of heat change between system and surrounding must be huge enough?
a small amount of heat change will be irreversible?
2) i found that in order to have a infinitesimal steps in the exchange of heat, temperature difference of the system and the corresponding surrounding has to be infinitesimal.
what if the amount of q is huge enough to make a difference in the temperature of system?
du=q-w'
in this case, heat change, i reckon
a)since u is state function, there is no change in U, thus change in u is 0
b) 0=q-w' hence q=w' , all the heat transferred is spent on doing work
c) in order to make this reversible, w' must be maximum, so does the q1)does it mean that if i would like to get a reversible change, the amount of heat change between system and surrounding must be huge enough?
a small amount of heat change will be irreversible?
2) i found that in order to have a infinitesimal steps in the exchange of heat, temperature difference of the system and the corresponding surrounding has to be infinitesimal.
what if the amount of q is huge enough to make a difference in the temperature of system?
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