State Functions


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Jielena_Bragasin2G
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Joined: Sat Aug 24, 2019 12:18 am
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State Functions

Postby Jielena_Bragasin2G » Sun Jan 26, 2020 10:56 pm

Why is internal energy not a state function while heat and work are state functions? I thought initial energy would also be a state function since: State function = work + heat.

sbeall_1C
Posts: 109
Joined: Sat Sep 07, 2019 12:17 am
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Re: State Functions

Postby sbeall_1C » Sun Jan 26, 2020 11:04 pm

Heat and work are not state functions, but enthalpy is a state function!

Venus_Hagan 2L
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

Re: State Functions

Postby Venus_Hagan 2L » Sun Jan 26, 2020 11:11 pm

Heat and work are not state functions. The path/steps that are taken to get the value matter.

vpena_1I
Posts: 109
Joined: Sat Aug 24, 2019 12:15 am

Re: State Functions

Postby vpena_1I » Sun Jan 26, 2020 11:13 pm

I think you meant it the other way around. Internal energy is a state function, while work and heat are not. The reason being, at least the way I think of it, is that an object can store internal energy. An object cannot, however, store work or heat. Work and heat is the process of internal energy being transferred from the system to its surroundings.

Nick Lewis 4F
Posts: 111
Joined: Wed Sep 18, 2019 12:18 am

Re: State Functions

Postby Nick Lewis 4F » Sun Jan 26, 2020 11:30 pm

What does it mean to be an "internal system"? What is the distinction between types of systems?


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