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State Functions

Posted: Sun Jan 26, 2020 10:56 pm
by Jielena_Bragasin2G
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.

Re: State Functions

Posted: Sun Jan 26, 2020 11:04 pm
by sbeall_1C
Heat and work are not state functions, but enthalpy is a state function!

Re: State Functions

Posted: Sun Jan 26, 2020 11:11 pm
by Venus_Hagan 2L
Heat and work are not state functions. The path/steps that are taken to get the value matter.

Re: State Functions

Posted: Sun Jan 26, 2020 11:13 pm
by vpena_1I
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.

Re: State Functions

Posted: Sun Jan 26, 2020 11:30 pm
by Nick Lewis 4F
What does it mean to be an "internal system"? What is the distinction between types of systems?