Thermo

No idea. Any hints
23 Replies
iTeachChem Helper
@Gyro Gearloose
Real potato
Real potatoOP2w ago
No description
iTeachChem Helper
Note for OP
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Real potato
Real potatoOP2w ago
33
integralofe^2v
basically for endo/exothermic process sign of delta H is checked which correspodns to sign of delta Q so basically first form a equation connecting delta Q to volume uing eqn of graph etc, then observe when a function changes its sign, it must be equal to 0, so set q=0 and solve for volume then
Real potato
Real potatoOP2w ago
i figured out this im trying to form a eqn in Q as a function of V then ill diffrentiate it Im having problem writing the internal energy change here
integralofe^2v
why differentiate
Real potato
Real potatoOP2w ago
Work we can write as 1/2 PoVo
integralofe^2v
u need to observe a sign change in Q
Real potato
Real potatoOP2w ago
At the point where it is going to change from Endo to exo it will be a maxima of Q after that point Q will reduce Yeah this is also correct though
integralofe^2v
hmm i did it by sign change, but u could be right too firstly for the equation u should write work usign integration from v=0 to random v, not the entire work
Real potato
Real potatoOP2w ago
Oh yeah right right And abt internal energy?
integralofe^2v
write it like this
No description
integralofe^2v
since P and V both are variable
Real potato
Real potatoOP2w ago
ill try this
iTeachChem
iTeachChem2w ago
i think it will be an inflection point but yea the dq = 0 part works.
Real potato
Real potatoOP2w ago
why inflection? The total heat is going to be decreased only so there must be a maxima at that point
iTeachChem
iTeachChem2w ago
my b, local maximum it is!
integralofe^2v
heres the sol btw incase, setting dq/dv directly zero or integrating it to find q and then setting it to 0 is same here ig
No description
Real potato
Real potatoOP2w ago
Yup thats same
integralofe^2v
yess
Real potato
Real potatoOP2w ago
+solved @integralofe^2v
iTeachChem Helper
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