Enthalpy and q

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Enthalpy and q

Postby Heesu_Kim_1F » Wed Jan 23, 2019 5:02 pm

From the lecture, I got that enthalpy is denoted by q = delta H and that it is a state property, but also confusingly, I got from the powerpoint that heat is denoted by q and that it is NOT a state property. Can someone clarify? Thank you in advance!

Hovik Mike Mkryan 2I
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Re: Enthalpy and q

Postby Hovik Mike Mkryan 2I » Wed Jan 23, 2019 5:22 pm

I believe that in today's lecture Dr. Lavelle said that enthalpy is a state property and that the value is determined by its current state. He mentioned that qsubp is the same as Delta H, therefore a state property. Hope this helped!

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Re: Enthalpy and q

Postby Rachel-Weisz3C » Wed Jan 23, 2019 7:34 pm

Dr. Lavelle said that a state property is a value determined by its current state, independent of the path taken to obtain that state. Enthalpy does fall under this category, along with temperatures, volume, pressure, energy, density and heat capacity.

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Re: Enthalpy and q

Postby 805087225 » Thu Jan 24, 2019 9:54 am

Enthalpy is denoted by delta H and that is only final - initial and is a state property.
q though, he will explain further but it denotes the value of heat and that depends on its entire path, where it gains/loses heat.

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