## State Function

$\Delta U=q+w$

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

### State Function

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

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

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.