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state function

Posted: Wed Feb 13, 2019 12:30 am
by megangeorge-1K
Is work a state function?

Re: state function

Posted: Wed Feb 13, 2019 12:32 am
by Gillian Murphy 2C
No- both work and heat are not state functions

Re: state function

Posted: Wed Feb 13, 2019 1:12 pm
by megangeorge-1K
why is Internal energy a state function if it is comprised of heat and work which are both not state functions?

Re: state function

Posted: Wed Feb 13, 2019 1:23 pm
by Vicky Lu 1L
Work is not a state function along with heat and cell potential. Internal energy is a state function as at equilibrium, there is a set amount as delta Utotal = deltaU system + deltaU surrounding. Work and heat are path functions, so you can't find its value based on final - initial.

Re: state function

Posted: Wed Feb 13, 2019 1:28 pm
by Katelyn Pham 4E
State functions could be thought of in the pneumonic that Lyndon told us
PD TV HUGS (Pressure, Temperature, Velocity, H (enthalpy), U (internal energy), G (gibbs free energy), S (entropy) are all state functions:
"under Pressure, feeling Depressed, just wanna watch TV and get HUGS"