Thermodynamics Rules/Concepts

[MinjooPark_3I]

Hi! I'm sure there are already posts about this but I wanted to ask if you all can list how certain conditions affect the internal energy, entropy, enthalpy, work, etc.

So I know that:
-if the initial and finals states are the same, dU and dS will be 0 because they are state functions
-w=0 in isobaric, isochoric conditions
-dU=0 in isothermal processes

I know there are probably many more but I can't think of them from the top of my head.
Can you all list some other ones? Thank you!!

[Yasmina Zaarour 1G]

- If a reaction is reversible, then and
-If a reaction is irreversible, then so

Also would like to add that I think work doesn't equal zero in isobaric (constant pressure) conditions ! w=-PV so it is only equal to zero when it is in isochoric conditions like you added.

[Lakshmi Davuluri 1E]

- If a reaction is reversible, then and
-If a reaction is irreversible, then so

Also would like to add that I think work doesn't equal zero in isobaric (constant pressure) conditions ! w=-PV so it is only equal to zero when it is in isochoric conditions like you added.

Yeah, I agree with you. I also think that work doesn't equal zero under isobaric conditions because of the equation w=-P*deltaV. Even though pressure is constant, there can still be a change in volume, which would result in a nonzero value for work.

[MinjooPark_3I]

thank you for correcting me!