state functions

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Clarice Chui 2C
Posts: 101
Joined: Fri Aug 30, 2019 12:16 am

state functions

Postby Clarice Chui 2C » Sun Mar 15, 2020 7:50 am

What are state functions and what are not state functions?

Eesha Chattopadhyay 2K
Posts: 104
Joined: Fri Aug 09, 2019 12:16 am

Re: state functions

Postby Eesha Chattopadhyay 2K » Sun Mar 15, 2020 7:52 am

State functions are functions that only consider the initial and final states, not the path that is taken to obtain those states. An example of a state property is displacement, whereas the non-state property would be the total distance traveled.

Ashley Wang 4G
Posts: 103
Joined: Wed Sep 11, 2019 12:16 am

Re: state functions

Postby Ashley Wang 4G » Sun Mar 15, 2020 1:23 pm

For the properties we learned about in thermodynamics, Gibb's free energy, entropy, enthalpy, and internal energy are all state functions. Work and heat are path functions.

Emily Lo 1J
Posts: 50
Joined: Thu Sep 19, 2019 12:16 am

Re: state functions

Postby Emily Lo 1J » Mon Mar 16, 2020 2:25 pm

State functions only depend on the initial and final products. Examples are entropy, enthalpy, and gibbs free energy.

Tauhid Islam- 1H
Posts: 64
Joined: Fri Aug 02, 2019 12:15 am

Re: state functions

Postby Tauhid Islam- 1H » Mon Mar 16, 2020 4:24 pm

This concept was heavily emphasized in thermodynamics, state functions are properties whose values do not depend on the path taken to reach that specific value whereas path functions are functions that depends on the path taken from two values. For state functions, you are only concerned over the final and initial values of the function.

ValerieChavarin 4F
Posts: 99
Joined: Wed Sep 18, 2019 12:18 am

Re: state functions

Postby ValerieChavarin 4F » Mon Mar 16, 2020 4:49 pm

State functions, such as enthalpy, entropy, and Gibb's free energy, are dependent on the initial and final values. However, in the case of heat (q) and work which are pathway functions, the 'path' taken or how much is done is important.

Callum Guo 1H
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Joined: Fri Aug 02, 2019 12:15 am
Been upvoted: 1 time

Re: state functions

Postby Callum Guo 1H » Mon Mar 16, 2020 5:52 pm

state functions are those that are not path-dependent. So the path it takes for it to get from it's intital to final state doesn't matter

Ayushi2011
Posts: 101
Joined: Wed Feb 27, 2019 12:17 am

Re: state functions

Postby Ayushi2011 » Mon Mar 16, 2020 6:13 pm

State functions are path-independent.

Charlene Datu 2E
Posts: 62
Joined: Wed Sep 11, 2019 12:16 am

Re: state functions

Postby Charlene Datu 2E » Mon Mar 16, 2020 7:32 pm

State functions are an intrinsic value that do not depend on the path taken to obtain, only on the current state.
State functions: gibb's(G), enthalpy (H), entropy (S), heat capacity, pressure, volume, density
Not state functions: work (w), heat (q)

Owen-Koetters-4I
Posts: 50
Joined: Fri Sep 28, 2018 12:16 am

Re: state functions

Postby Owen-Koetters-4I » Mon Mar 16, 2020 8:13 pm

State functions are independent of the path taken. Gibbs energy (G), enthalpy (H), entropy (S), heat capacity, pressure, volume, and density are all examples. Work (w) and heat (q) are not state functions.


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