Enthalpy


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Megan Cao 1I
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Joined: Sat Sep 07, 2019 12:18 am

Enthalpy

Postby Megan Cao 1I » Tue Feb 11, 2020 5:49 pm

What does the term "state function" entail? All I've seem to understand from it is that it's only dependent of its current calculated state and that you can add it's values. Other than that, what does "state function" mean?

jisulee1C
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Joined: Thu Jul 25, 2019 12:17 am

Re: Enthalpy

Postby jisulee1C » Tue Feb 11, 2020 6:03 pm

A state function means that only the initial state and final state are needed to determine the value. I think Lavelle's example of how only the initial and final destinations matter when you hike a mountain and how the pathway you took is irrelevant explains conceptually what a state function is.

Gurmukhi Bevli 4G
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Re: Enthalpy

Postby Gurmukhi Bevli 4G » Sat Feb 15, 2020 3:56 am

The value of state functions are independent of pathways taken to reach their initial/final values. Since pathway becomes inconsequential, the quantity is only dependent on initial and final values.

Fiona Latifi 1A
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Re: Enthalpy

Postby Fiona Latifi 1A » Sat Feb 15, 2020 1:21 pm

Examples of state functions include density, internal energy, enthalpy, and entropy.

Daria Azizad 1K
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Joined: Thu Jul 25, 2019 12:15 am

Re: Enthalpy

Postby Daria Azizad 1K » Sat Feb 15, 2020 9:58 pm

A state function relies on initial and final values, not the pathway taken.

Juana Abana 1G
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Re: Enthalpy

Postby Juana Abana 1G » Wed Feb 19, 2020 8:05 pm

The value of a state function is only dependent on the initial value and the final value.

Brandon Valafar
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Re: Enthalpy

Postby Brandon Valafar » Thu Feb 20, 2020 11:58 am

State functions are independent values regardless of the pathway to get to the final value. The quantity only matters based on the final and initial values, and not the pathway to get there.

Dan M -3E
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Re: Enthalpy

Postby Dan M -3E » Sun Feb 23, 2020 3:35 pm

Something being a state function means that the pathway by which the value arrived at its final value does not matter in the calculation of the value.

san_2F
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Re: Enthalpy

Postby san_2F » Sun Feb 23, 2020 4:00 pm

A state function is a property that states that the path that something takes is irrelevant, the only thing that matters is the final result or final state. d

Brandon Valafar
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Re: Enthalpy

Postby Brandon Valafar » Sun Feb 23, 2020 4:18 pm

A state function doesn't rely on the pathway taken, it only relies on the initial and final values.

Chris Charton 1B
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Re: Enthalpy

Postby Chris Charton 1B » Sun Feb 23, 2020 7:50 pm

State functions only depend on initial and final values, thus intermediate steps are irrelevant when calculating enthalpy or entropy.

Ivan Tadeja 1G
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Re: Enthalpy

Postby Ivan Tadeja 1G » Sat Mar 14, 2020 10:21 am

Fiona Latifi 1A wrote:Examples of state functions include density, internal energy, enthalpy, and entropy.


Could you also give examples of what would not be a state function?

Chris Charton 1B
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Joined: Mon Jun 17, 2019 7:23 am

Re: Enthalpy

Postby Chris Charton 1B » Sat Mar 14, 2020 9:36 pm

Ivan Tadeja 1G wrote:
Fiona Latifi 1A wrote:Examples of state functions include density, internal energy, enthalpy, and entropy.


Could you also give examples of what would not be a state function?


Work is an example of a non-state (path) function


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