State function vs not state function


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Rebecca Chen 3F
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Joined: Fri Sep 25, 2015 3:00 am

State function vs not state function

Postby Rebecca Chen 3F » Wed Jan 20, 2016 12:22 am

Hi! I'm still a bit confused as to what a state function is. Also, what is the importance of something being a state function, and (like on page 25 of the course reader), how does this relate to deltaU (a state function) = q + w (not state functions)?

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Re: State function vs not state function

Postby Chem_Mod » Wed Jan 20, 2016 12:49 am

A state function is something whose difference can be defined between any two points. The path taken to get from one point to the other does not matter. You can think of deltaU as being a state function because it is directly related to the temperature. However, the ways in which it can change depend on the path.

704628249
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Re: State function vs not state function

Postby 704628249 » Wed Jan 20, 2016 12:13 pm

A state function does not depend on the path taken. For example, work is not a state function because the amount of work done does depend on the path that you take, not just the initial and final values.


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