∆H and ∆U


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Rita Chen 1B
Posts: 112
Joined: Sat Jul 20, 2019 12:15 am

∆H and ∆U

Postby Rita Chen 1B » Thu Jan 30, 2020 11:39 pm

Can someone simply explain ∆H and ∆U for me?

Jasmine Fendi 1D
Posts: 108
Joined: Sat Aug 24, 2019 12:15 am

Re: ∆H and ∆U

Postby Jasmine Fendi 1D » Thu Jan 30, 2020 11:55 pm

Delta H is the change in enthalpy while delta U is the change in internal energy in a system. Most of the time, I think you can use them interchangeably in this class.

DLee_1L
Posts: 103
Joined: Sat Aug 17, 2019 12:17 am

Re: ∆H and ∆U

Postby DLee_1L » Sat Feb 01, 2020 9:51 am

You can use delta H and delta U interchangeably when the system has no work done on it and the only thing contributing to delta H is delta U

305385703
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: ∆H and ∆U

Postby 305385703 » Sat Feb 01, 2020 11:02 pm

Delta H is the change in enthalpy of a system while delta U is the change in internal energy accompanied by a reaction. In other words, the difference between delta H and delta U is P x Delta V. So Delta H is the total work done and Delta U is just the work done by the heat of the reaction.


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