State Function

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Ashley Kenney 1E
Posts: 32
Joined: Wed Nov 14, 2018 12:23 am

State Function

Postby Ashley Kenney 1E » Sat Feb 16, 2019 9:07 pm

Why is change in internal energy a state function when it is comprised of things that are not state functions?

Ashe Chen 2C
Posts: 31
Joined: Mon Jan 07, 2019 8:23 am

Re: State Function

Postby Ashe Chen 2C » Sat Feb 16, 2019 9:12 pm

The change in internal energy during a process depends only upon the initial state and final state while work and heat depends on upon the path followed. Thus, internal energy is a state function and work and heat are not.

Michael Torres 4I
Posts: 92
Joined: Thu May 10, 2018 3:00 am
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Re: State Function

Postby Michael Torres 4I » Sat Feb 16, 2019 11:44 pm

The book mentions that a state function does not need to be composed of state functions itself to be a state function. Therefore, the fact that internal energy is composed of work and heat, neither of which are state functions, does not stop internal energy from being a state function. Thus, the change in internal energy of a system is only dependent upon its initial and final states.

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