enthalpy definition

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Liam Maxwell 2E
Posts: 53
Joined: Fri Sep 29, 2017 7:07 am

enthalpy definition

Postby Liam Maxwell 2E » Sun Jan 14, 2018 9:43 pm

What exactly is enthalpy? I know that it is extremely important in thermochemistry but I am still a little shaky as to what it exactly is.

Sabah Islam 1G
Posts: 50
Joined: Sat Jul 22, 2017 3:01 am

Re: enthalpy definition

Postby Sabah Islam 1G » Sun Jan 14, 2018 9:48 pm

Enthalpy is the heat that is released or absorbed in chemical reactions and physical changes, at constant pressure

Sabrina 1F
Posts: 7
Joined: Wed Nov 16, 2016 3:03 am

Re: enthalpy definition

Postby Sabrina 1F » Sun Jan 14, 2018 10:08 pm

Ethalpy is the function that allows us to keep track of energy changes at constant pressure. Heat is energy transferred as a result of temperature change and is not a state function, unlike ethalpy.

Eli Aminpour 2K
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

Re: enthalpy definition

Postby Eli Aminpour 2K » Tue Jan 16, 2018 11:26 am

In class, it was defined as "the amount of heat released or absorbed at a constant pressure (qp=delta H). Its also a state property, meaning its value is determined by its current state.

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