Is ans B?
Imo We can assume a reversible process operating between the initial and final states
As entropy is a state function no matter the path we get the same answer
I'm getting B too
Yeah, btw mind change in entropy is path function ( a tricky question which might come )
Arent these contradicting each other?
Yeah thats why i said tricky entropy and change in entropy are different things just entropy is state fn but its change is path fn
Over here its change in entropy that is asked right.
How to calculated Δ S for second process?
I just read this up they say 'Generation of entropy' Is a path function
Change in entropy has to be a state function only imo
We can assume via reversiable process thats why
Any change is always path fn be it enthalpy internal energy
See any standard book its always written in Note section
So in some question, if they say irreversible process is taking place and ask entropy change. We can assume a reversible process between the two states and calculated Δ S for that?
Also, what kind of a reversible process do we choose.
Its actually we break elements of carnot cycle
Which sounds crazy
I don't get it?
U is a state function
Let's define points A and B
Now ∆U will be Ub-Ua no matter what the path taken was?
Can you please explain?
Or attach a source which states this?
Didnt get you?
It is because it denotes a specific line on graph
I drew multiple paths from A to B
Still ∆U is constant
Path fn iss liye kyoki line hai ek un dono ko join krna
But for state fn its just a point thats what i was given explanation
Can you attach a link to that pdf ?
Entropy is a state function
That's what our sir taught us.
Between any two points, only one reversible path exists and the q of that path determines entropy and hence it should be a state function