State functions

[Anya Holbrook 1E]

Just to double check, entropy (S), enthalpy (H) and internal energy (U) are all state functions correct? Are there any others we've learned that I'm missing?

[Chem_Mod]

Yes, those are all state functions. Others include temperature, pressure, volume,... the list is quite large

[Ellison Gonzales 1H]

A good tip I learned is that all state functions are written with capital letters! Hope that makes it a bit easier to remember which ones are considered state functions!

[Bella Bursulaya 3G]

If you can do X(final) - X(initial), it is usually a state function! That's how I usually think about it.

[Natalie 3k]

I saw something to remember some of them which is PVT HUGS (pressure volume temp, enthalpy, internal energy, Gibbs energy, and entropy), might not be all of them but the hugs part helps me remember.

[Olivia Monroy 1A]

Enthalpy, Entropy, Gibbs free energy, internal energy, volume, temp, etc are all state functions. They can be seen in equations with a delta sign and are found by final-initial values.

[Geethika Janga 1L]

Yes, those are all state functions! We've also learned about other ones such as temperature and Gibbs Free Energy. As long as all the individual units add up to create the final it is a state function (if that makes sense)

[rita_debbaneh2G]

The way to tell if something is a state function is if the path you get to the final answer doesn't have to be the same to get the same result. For example, the textbook makes the comparison that it's like taking two different paths that lead to the same location on a mountain. A more chemistry oriented example would be if internal energy, which you mentioned. A system can have the same value of internal energy if a.) no work is done on/by it and heat is added or taken away from the system or b.)the system does work/has work done on it and no heat is added/taken away. These are two different methods, but they can both lead to the same value of U.

[Nina Ellefsen 2D]

hi! i watched a video where they said to use "private hugs" (p.v.t. h.u.g.s.) as a way to remember all of the state functions- hope this helps!

[Taha 2D]

yes they are. A good way to remember them is if you can carry out their calculations by just doing final - intial

[Nick P 3D]

There are quite a lot, wikipedia has a pretty good list. But yes those are the ones we covered in class.

[Jack Kettering 3D]

Yep all the ones listed are state functions and there are several more like temperature for example!

[Jack_Pearce_2H]

Yes, but do not forget temperature as well. Sometimes it is a bit overlooked but it also is determined by Final-Initial!

[YuditGaribay3J]

Just to be sure entropy and enthalpy would be state functions because it would depend on the state of your values at the beginning and at the end? Sorry if it didn't makes sense!

[Nan_Guan_1L]

Yes these are state functions. Remember the diagram Dr. Lavelle drew in class-- if it doesn't matter how you reached from A to B, then this would be a state function.

[Hannah Lechtzin 1K]

Yes those are all state functions. There are a number of other things that are state functions, including temperature.

[Diana Aguilar 3H]

Hi! Yes, those are all state functions and there are others as well like temperature.

[Matlynn Giles 2E]

Yes! Those are all state functions!

[Michael Cardenas 3B]

They are all state functions! Another state function we learned is Temperature if I remember correctly from the test.