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Heat v Enthalpy

Posted: Sun Jan 26, 2020 8:30 pm
by TanveerDhaliwal3G
Why is heat not a state function while enthalpy is?

Re: Heat v Enthalpy

Posted: Sun Jan 26, 2020 8:43 pm
by Jacey Yang 1F
Heat depends on the path taken to obtain the current state. Enthalpy is a state function because it only depends on the initial and final values of heat, so it doesn't depend on the path taken.

Re: Heat v Enthalpy

Posted: Sun Jan 26, 2020 9:01 pm
by gabbymaraziti
Enthalpy is a state function that keeps tract of the losses of energy during heat transfer. Heat itself, however, like work, is not a state function because it depends on the path used to go from the initial to the final state.

Re: Heat v Enthalpy

Posted: Sun Jan 26, 2020 9:31 pm
by 005206171
What helps me is to look at the formula of heat and enthalpy. Enthalpy can be calculated using the initial and finals states. Heat is calculated using a bunch of parameters meaning it depends on the path taken.