8.101e

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Grace Ramey 2K
Posts: 57
Joined: Thu Jul 27, 2017 3:01 am

8.101e

Postby Grace Ramey 2K » Wed Jan 24, 2018 8:08 pm

If the standard reaction enthalpy for a certain reaction is negative, does that mean that energy leaves or enters the system? I ask this with regard to question 8.101e, which is as follows:

E. How much enthalpy is exchanged, and does it leave or enter the system?
The answer is -3.0 kJ.

Thank you for your help!

Shawn Patel 1I
Posts: 54
Joined: Thu Jul 27, 2017 3:01 am

Re: 8.101e

Postby Shawn Patel 1I » Wed Jan 24, 2018 9:01 pm

Hey,
This means that energy is released in terms of heat.

mhuang 1E
Posts: 22
Joined: Fri Sep 29, 2017 7:05 am

Re: 8.101e

Postby mhuang 1E » Thu Jan 25, 2018 12:34 am

To add on, if the standard reaction enthalpy for a certain rxn is negative, that means that the rxn is exothermic (indicating that heat is released, or that energy leaves the system.) To contrast, if the standard reaction enthalpy for the rxn is positive, that means that the rxn is endothermic (indicating that energy enters the system)


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