reaction enthalpy vs reaction internal energy  [ENDORSED]

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RenuChepuru1L
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reaction enthalpy vs reaction internal energy

Postby RenuChepuru1L » Wed Jan 10, 2018 6:11 pm

I don't understand the difference between reaction enthalpy and reaction internal energy. can someone lay out the definitions, also how does that correspond to H and U

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Re: reaction enthalpy vs reaction internal energy  [ENDORSED]

Postby Chem_Mod » Wed Jan 10, 2018 6:58 pm

The change in enthalpy of a reaction is by definition the change in heat of that reaction under constant pressure conditions (open to the atmosphere).

The change in internal energy of a reaction is by definition the change in heat of that reaction under constant volume conditions (in a sealed vessel with rigid walls).


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