State Property

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Alison Trinh 1E
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

State Property

Postby Alison Trinh 1E » Sun Jan 26, 2020 11:40 pm

Can someone define state property for me please? Thank you.

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: State Property

Postby Charisse Vu 1H » Sun Jan 26, 2020 11:44 pm

State properties are the same as state functions. The path that is taken to get from one point to another is not important. An example Professor Lavelle gave in class was altitude. Enthalpy is another example.

Long Luong 2H
Posts: 51
Joined: Thu Sep 19, 2019 12:16 am

Re: State Property

Postby Long Luong 2H » Sun Jan 26, 2020 11:51 pm

Of course! a state property is a value that isn't affected by how the system arrived at that state. At equilibrium, enthalpy describe the state of the system without considering how it got there. In contrast, heat doesn't describe a system but is instead a value that shows how a system changes. It depends on a change or path.

Matthew Chan 1B
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Joined: Sat Sep 07, 2019 12:16 am

Re: State Property

Postby Matthew Chan 1B » Mon Jan 27, 2020 12:00 am

A state property is a quantity that is independent of how the substance was prepared

Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: State Property

Postby Chantel_2I » Mon Jan 27, 2020 12:16 pm

Could someone also explain why heat is not a state property? Thanks!

Sanjana K - 2F
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Re: State Property

Postby Sanjana K - 2F » Mon Jan 27, 2020 2:38 pm

Chantel_2I wrote:Could someone also explain why heat is not a state property? Thanks!


If it's heat given off under constant pressure, then it's basically enthalpy so yes, it would be a state property because the path DOES matter as you take into account what intermediate steps where needed to get to the final temperature. But if you're just talking about the overall heat being released in a reaction, it's not a state property.

TimVintsDis4L
Posts: 104
Joined: Sat Aug 17, 2019 12:17 am

Re: State Property

Postby TimVintsDis4L » Mon Jan 27, 2020 3:13 pm

State property is like the distance between UCLA and downtown. The state property distance will be different from the actual route to take their as you can't go through buildings when driving.


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